Quotes & Sayings About Blackboard

Sex, once a law as undisputed as gravity, has been disproved. The equation is erased, the blackboard broken — Isaac Marion

Music is the chalk to the blackboard of life. Without it everything is a blank slate — Ray Charles

It sounded like a piece of blackboard being dragged over the nails of a wall of severed fingers. — Neil Gaiman

I always sat in the front so I could see the blackboard - I guessed I was probably nearsighted, not that we could afford an eye exam, much less glasses. — Mia Sheridan

THE DEATH OF LEOPOLD GURSKY Leopold Gursky started dying on August 18, 1920. He died learning to walk. He died standing at the blackboard. And once, also, carrying a heavy tray. He died practicing a new way to sign his name. Opening a window. Washing his genitals in the bath. He died alone, because he was too embarrassed to phone anyone. Or he died thinking about Alma. Or when he chose not to. — Nicole Krauss

Prosperity is just around the corner. — Herbert Hoover

But it is strange how many rational beings believe the ultimate truths of the universe to be reducible to patterns on a blackboard. — Frederick Pollock

Next to me she seems like a clean blackboard, whereas I am full of crossed-out scribbles that I can no longer decipher. — Deborah Moggach

It's not that students don't "get" Kafka's humor but that we've taught them to see humor as something you get
the same way we've taught them that a self is something you just have. No wonder they cannot appreciate the really central Kafka joke
that the horrific struggle to establish a human self results in a self whose humanity is inseparable from that horrific struggle. That our endless and impossible journey toward home is in fact our home. It's hard to put into words up at the blackboard, believe me. You can tell them that maybe it's good they don't "get" Kafka. You can ask them to imagine his art as a kind of door. To envision us readers coming up and pounding on this door, pounding and pounding, not just wanting admission but needing it, we don't know what it is but we can feel it, this total desperation to enter, pounding and pushing and kicking, etc. That, finally, the door opens ... and it opens outward: we've been inside what we wanted all along. Das ist komisch. — David Foster Wallace

cunt on the blackboard. — Karin Slaughter

All right," he said. "Since you asked, Webmind is an emergent quantum-computational system based on a stable null-sigma condensate that resists decoherence thanks to constructive feedback loops." He turned to the blackboard, scooped up a piece of chalk, and began writing rapidly. "See," he said, "using Dirac notation, if we let Webmind's default conscious state be represented by a bra of phi and a ket of psi, then this would be the einselected basis." His chalk flew across the board again. "Now, we can get the vector basis of the total combined Webmind alpha-state consciousness ... — Robert J. Sawyer

We were scarecrows in blue uniforms. After a grand total of five days of blackboard instruction and fifty rounds at the NYPD firing range, my new police academy classmates and I were standing out on the sidewalks of central Brooklyn pretending to be police officers. They gave us badges. They gave us handcuffs. They gave us guns - standard police-issue Smith & Wesson .38 Specials. They told us, "Good luck." In early July 1966, riots had broken out in East New York, Bedford-Stuyvesant, and Brownsville, Brooklyn. Hundreds of angry young men were roaming the streets and throwing bottles and rocks. Already they had injured police officers and attempted to flip over a radio car. On one corner, police found eighteen Molotov cocktails. The borough commander was calling for reinforcements - and fast. — Ray Kelly

I hid myself behind Baba. It was like being in the shadow. Shadows are empty places in things. The colour of shadow is also black, which is the color of empty things. Blackboard is also black when it is empty No one can draw shadows on blackboards because shadows keep on changing. You cannot draw changing things. But it happens, you know; you draw and you look and it has changed. — Bilal Tanweer

I thought about this for days, just as I thought of the special-ed teacher I met in Pittsburgh. "You know," I said, "I hear those words and automatically think Handicapped, or, Learning disabled. But aren't a lot of your students just assholes?"
"You got it," she said. Then she told me about a kid - last day of class - who wrote on the blackboard, "Mrs. J is a cock master."
I was impressed because I'd never heard that term before. She was impressed because the boy had spelled it correctly. — David Sedaris

That was how I knew Sister Mukumbo was a real teacher, aside from her welcoming smile and her blackboard penmanship. She asked a teacher's type of question. The kind that says: Join in. — Rita Williams-Garcia

. . . once on a German radio in the town square we heard Hitler's voice, everyone German soldiers our neighbors smiling at the crazy screaming, a sound like fingernails on a blackboard trying to scrape God's face from our minds . . . conquer our souls as well as our bodies and minds . . . Henryk looked so frightened - a wolf's howls demanding we see the world the way it did . . . — Philip Schultz

That's the amazing thing about life. You can just rub it out, like a blackboard, and start again. — Ricky Gervais

It was as if I had been looking at the whole thing clearly on the blackboard of my mind, but when I turned to read it, part of it had been erased and the rest didn't make sense. — Daniel Keyes

What would happen if history could be rewritten as casually as erasing a blackboard? Our past would be like the shifting sands at the seashore, constantly blown this way or that by the slightest breeze. History would be constantly changing every time someone spun the dial of a time machine and blundered his or her way into the past. History, as we know it, would be impossible. It would cease to exist. — Michio Kaku

Francie nodded shyly. The girl brought an eraser close to the mesh. Francie poked a finger through to touch the vari-colored felt layers blended together by a film of powdered chalk. As she was about to touch this soft beautifulness, the little girl snatched it away and spat full in Francie's face. Francie closed her eyes tightly to keep the hurt bitter tears from spilling out. The other girl stood there curiously, waiting for the tears. When none came, she taunted: "Why don't you bust out crying, you dockle? Want I should spit in your face again?" Francie turned and went down into the cellar and sat in the dark a long time waiting until the waves of hurt stopped breaking over her. It was the first of many disillusionments that were to come as her capacity to feel things grew. She never liked blackboard erasers after that. — Betty Smith

There always comes in September a parched brightness to the air that hits Rabbit two ways, smelling of apples and blackboard dust and marking the return to school and work in earnest, but then again reminding him he's suffered another promotion, taken another step up the stairs that has darkness at the head. — John Updike

Never forget, the press is the enemy. The establishment is the enemy. The professors are the enemy. Professors are the enemy. Write that on a blackboard 100 times and never forget it. — Richard M. Nixon

The professor had refused surgery for the rupturing aorta that was wiping his personal equation off the blackboard of life. "It is tasteless to prolong life artificially," Einstein had told his physicians. — Tom Robbins

Oh, listen. Listen!' A sound like a big crowd a good way off, excited and shouting, getting closer. We stand up and scan the empty sky. Suddenly there they are (the geese), a wavering V headed directly over the hilltop, quite low, beating southward down the central flyway and talking as they pass. We stay quiet suspending our human conversation until their garulity fades and their wavering lines are invisible in the sky.
They have passed over us like an eraser over a blackboard, wiping away whatever was there before they came. — Wallace Stegner

A circle drawn on a blackboard, a right triangle, a rhombus
all these are forms we can fully intuit; Ireneo could do the same with the stormy mane of a young colt, a small herd of cattle on a mountainside, a flickering fire and its uncountable ashes, and the many faces of a dead man at a wake. I have no idea how many stars he saw in the sky. — Jorge Luis Borges

Try to say that: "I don't know anything". We used to call it "tabula rasa" in Latin. Maybe you could think of yourself as an erased blackboard, ready to be written on. For by and large, what blocks spiritual teaching is the assumption that we already know, or that we don't need to know. We have to pray for the grace of beginner's mind. We need to say with the blind man, "I want to see". — Richard Rohr

I was on a walking tour of Oxford colleges once with a group of bored and unimpressable tourists. They yawned at Balliol's quad, T.E. Lawrence's and Churchill's portraits, and the blackboard Einstein wrote his E=mc2 on. Then the tour guide said, 'And this is the Bridge of Sighs, where Lord Peter proposed (in Latin) to Harriet,' and everyone suddenly came to life and began snapping pictures. Such is the power of books. — Connie Willis

I glanced in the first open door and stopped short. Desks. Four tiny desks. A wall of faded posters of alphabet animals. A blackboard, still showing the ghost of numbers. I blinked, certain I was seeing wrong.
Derek nudged my legs, telling me to get moving. I looked at him, and I looked at the classroom.
This was where Derek had grown up. Four tiny desks. Four little boys. Four young werewolves.
For a second, I could see them - three boys working at the three clustered desks, Derek alone at the fourth, pushed slightly away, hunched over his work, trying to ignore the others.
Derek nudged me again, whining softly, and I looked down to see him eyeing the room, every hair on his neck on end, anxious to get away from this place. — Kelley Armstrong

[Benjamin Peirce's] lectures were not easy to follow. They were never carefully prepared. The work with which he rapidly covered the blackboard was very illegible, marred with frequent erasures, and not infrequent mistakes (he worked too fast for accuracy). He was always ready to digress from the straight path and explore some sidetrack that had suddenly attracted his attention, but which was likely to have led nowhere when the college bell announced the close of the hour and we filed out, leaving him abstractedly staring at his work, still with chalk and eraser in his hands, entirely oblivious of his departing class. — William Elwood Byerly

The principle factor in my success has been an absolute desire to draw constantly. I never decided to be an artist. Simply, I couldn't stop myself from drawing. I drew for my own pleasure. I never wanted to know whether or not someone liked my drawings. I have never kept one of my drawings. I drew on walls, the school blackboard, odd bits of paper, the walls of barns. Today I'm still as fond of drawings as when I was a kid - and that was a long time ago - but, surprising as it may seem, I never thought about the money I would receive for my drawings. I simply drew them. — Winsor McCay

Once you have a plan, you must sell it to the players. It is not enough to put it on the blackboard and say, 'Okay, here it is.' You have to convince the players that the plan is a good one and show them, in specific ways, why it will work. If you do, you send them out to the practice field with more confidence. — Joe Gibbs

I don't have to tell you that the one constant through all the years has been baseball. America has been erased like a blackboard, only to be rebuilt and then erased again. But baseball has marked time while America has rolled by like a procession of steamrollers. — W.P. Kinsella

I'm convinced that Nabokov wrote his novels around words like agglutinate, siliceous, gardyloo, ophidian, triskelions. That he took an ESL course at a local night school and the teacher wrote those words on the blackboard and said, "Today's assignment is to take these words and use them in a first novel the New York Times will call 'Riveting, truly a classic for the ages. — Paul Beatty

Because my parents were American missionaries who sent me to public schools in rural Japan, I had to confront Hiroshima as a child. I was in the fourth grade - the only American in my class - when our teacher wrote the words "America" and "Atomic Bomb" in white chalk on the blackboard. All forty Japanese children turned around to stare at me. My country had done something unforgivable and I had to take responsibility for it, all by myself. I desperately wanted to dig a hole under my desk, to escape my classmates' mute disbelief and never have to face them again. — Linda Hoaglund

On the Left side of the blackboard I print a capital F on the right side another capital F. I draw an arrow from left to right, from FEAR to FREEDOM.
I don't think anyone achieves complete freedom, but what I am trying to do with you is drive fear into a corner — Frank McCourt

I remember one English teacher in the eighth grade, Florence Schrack, whose husband also taught at the high school. I thought what she said made sense, and she parsed sentences on the blackboard and gave me, I'd like to think, some sense of English grammar and that there is a grammar, that those commas serve a purpose and that a sentence has a logic, that you can break it down. I've tried not to forget those lessons, and to treat the English language with respect as a kind of intricate tool. — John Updike

It's a whole new world out here. The online world is like a blackboard on which, when you write, the whole world can see - and I'm thrilled about this development. I want to make full use of it. — Kailash Kher

I sat at the very back of the class - the blackboard could have been in another country. The words were just circus horses dancing up and down. At least, they never stayed still long enough for me to work out what they were saying. The — Sally Gardner

Where is the sound?" someone hastily scribbled on the blackboard, and they all waited anxiously for the reply. Milo caught his breath, picked up the chalk, and explained simply, "It's on the tip of my tongue. — Norton Juster

Life is this great big blackboard, and on it you write all the things that you do. — Elizabeth Edwards

One day Shizuo Kakutani was teaching a class at Yale. He wrote down a lemma on the blackboard and announced that the proof was obvious. One student timidly raised his hand and said that it wasn't obvious to him. Could Kakutani explain?

After several moments' thought, Kakutani realized that he could not himself prove the lemma. He apologized, and said that he would report back at their next class meeting.

After class, Kakutani, went straight to his office. He labored for quite a time and found that he could not prove the pesky lemma. He skipped lunch and went to the library to track down the lemma. After much work, he finally found the original paper. The lemma was stated clearly and succinctly. For the proof, the author had written, 'Exercise for the reader. — Steven G. Krantz

There Rhoda sits staring at the blackboard,' said Louis, 'in the
schoolroom, while we ramble off, picking here a bit of thyme,
pinching here a leaf of southernwood while Bernard tells a story.
Her shoulder-blades meet across her back like the wings of a small
butterfly. And as she stares at the chalk figures, her mind lodges
in those white circles, it steps through those white loops into
emptiness, alone. They have no meaning for her. She has no answer
for them. She has no body as the others have. And I, who speak
with an Australian accent, whose father is a banker in Brisbane, do
not fear her as I fear the others. — Virginia Woolf

I'm not afraid of dying. I'm afraid I haven't been alive enough. It should be written on every school room blackboard: Life is a playground - or nothing. — Jaco Van Dormael

It is still an unending source of surprise for me how a few scribbles on a blackboard or on a piece of paper can change the course of human affairs. — Stanislaw Ulam

Dick Feynman was a genius of visualization (he was also no slouch with equations): he made a mental picture of anything he was working on. While others were writing blackboard-filling formulas to express the laws of elementary particles, he would just draw a picture and figure out the answer. — Leonard Susskind

Made in America. Heck, let's make everything in America. Let's make pride and trust and teamwork more than chalk on a Harvard blackboard. — Chris Bent

I failed everything in school. I left when I was 13 because I had no comprehension of what the hell they were talking about up there at the blackboard. I must have that ADD thing. But, listening to people I thought, that's wonderful to be able to tell a story. — Malachy McCourt

I like music that's more offensive. I like it to sound like nails on a blackboard, get me wild. — Iggy Pop

The movie was an enormous hit in 1927. With Wings, it confirmed Bow as Hollywood's leading female star. She received forty thousand letters a week - more than the population of a fair-sized town. In the summer of 1927, her career seemed set to go on indefinitely. In fact, it was nearly at an end. Winsome and enchanting as she was to behold, her Brooklyn accent was the vocal equivalent of nails on a blackboard, and in the new world of talking pictures that would never do. — Bill Bryson

To write and speak correctly is certainly necessary; but it is not sufficient. A derivation correctly presented in the book or on the blackboard may be inaccessible and uninstructive, if the purpose of the successive steps is incomprehensible, if the reader or listener cannot understand how it was humanly possible to find such an argument ... — George Polya

Clouds are poems, and the most moving poems linger on the blackboard so long, written in cursive so lovely, they also exist inside our fingertips. We never really erase them at the end of the lesson. — Ann Beattie

Give me a blackboard. I can stop anything on a blackboard. — Lou Holtz

U. S. A. is the slice of a continent. U. S. A. is a group of holding companies, some aggregations of trade unions, a set of laws bound in calf, a radio network, a chain of moving picture theatres, a column of stockquotations rubbed out and written in by a Western Union boy on a blackboard, a public-library full of old newspapers and dogeared historybooks with protests scrawled on the margins in pencil. U. S. A. is the world's greatest rivervalley fringed with mountains and hills, U. S. A. is a set of bigmouthed officials with too many bankaccounts. U. S. A. is a lot of men buried in their uniforms in Arlington Cemetery. U. S. A. is the letters at the end of an address when you — John Dos Passos

Saint Maximilian used to give spiritual conferences to the new men in his religious community, the novices. One day, he taught them a lesson they would never forget: "How to become a Saint." The future saint began by telling his listeners that sanctity isn't so hard. It's the result of a simple equation, which he wrote on the blackboard: "W + w = S." The capital W stands for God's Will. The small w stands for our wills. When the two wills are united, they equal Sanctity. — Michael Gaitley

All us kids had found out by now that all teachers had a sore spot; some went crazy over gum chewing, others insane over behind-the-back giggles, still others nuts over the repeated squeaking and scuffing of shoes on the linoleum. Machine-gun coughs, donkeylike snorts, a fusillade of throat clearing, spitballs stuck to the blackboard: all these were arsenals in the battle against Hitlerian teachers. — Robert McCammon

My name is Lev," said Lev.
"My name is Lydia," said the woman. And they shook hands, Lev's hand holding the scrunched-up kerchief and Lydia's hand rough with salt and smelling of egg, and then Lev asked, "What are you planning to do in En gland?" and Lydia said, "I have some interviews in London for jobs as a translator."
"That sounds promising."
"I hope so. I was a teacher of English at School 237 in Yarbl, so my language is very colloquial."
Lev looked at Lydia. It wasn't difficult to imagine her standing in front of a class and writing words on a blackboard. He said, "I wonder why you're leaving our country when you had a good job at School 237 in Yarbl?"
"Well," said Lydia, "I became very tired of the view from my window. Every day, summer and winter, I looked out at the schoolyard and the high fence and the apartment block beyond, and I began to imagine I would die seeing these things, and I didn't want this. I expect you understand what I mean? — Rose Tremain

This is very creative, said Mrs. Fretag, and she began to read my essay. The words sounded good to me. Everybody was listening. My words filled the room, from blackboard to blackboard, they hit the ceiling and bounced off, they covered Mrs. Fretag's shoes and piled up on the floor. — Charles Bukowski

It's as if all your past is written on the blackboard, and if we could erase it, your past would no longer exist. The way you do that - the only way you do that - is in samadhi. — Frederick Lenz

If Atheism writes upon the blackboard of the Universe a question mark, it writes it for the purpose of stating that there is a question yet to be answered. Is it not better to place a question mark upon a problem while seeking an answer than to put the label "God" there and consider the matter solved? Does not the word "God" only confuse and make more difficult the solution by assuming a conclusion that is utterly groundless and palpably absurd? — Joseph Lewis

Many people avoid talking about death, but it never bothered me. The principal of my high school was an excellent teacher. One day he was writing on the blackboard when he suddenly turned around and said 'Life is a great adventure and death is the greatest adventure of all,' then went back to the board. I have never feared death since then. — Kathryn Tucker Windham

when fission was discovered, within perhaps a week there was on the blackboard in Robert Oppenheimer's office a drawing - a very bad, an execrable drawing - of a bomb. — Richard Rhodes

Life says: Write down your experiences in a notebook, not on a blackboard. Don't start with a clean slate, but with a new page, so you can look back. — Naveed Nawab Ali

Death is [ ... ] the blackboard on which life is written. — Osho

Can you draw a picture on the blackboard when somebody doesn't want you to? asked the rooster promptly.
"Yes," answered Kenny," if you write them a very nice poem."
"What is an only goat?"
"A lonely goat," answered Kenny.
The rooster shut one eye and looked at Kenny.
"can you hear a horse on the roof?" he asked.
"If you know how to listen in the night," said Kenny.
"Can you fix a broken promise?"
"Yes," said Kenny,"if it only looks broken,but really isn't."
The rooster drew his head back into his feathers and whispered, "What is a very narrow escape?"
"When somebody almost stops loving you," Kenny whispered back. — Maurice Sendak

In the chalky trough under the blackboard
are lessons dusted and already forgotten.
The teacher is squawking away once more,
scratching into the dark Welsh tabula rasa
the truths so far about God and arithmetic
with the expungible white of fossil shells. — Richie McCaffery

And last week, when he finally began to erase it, he noticed something very strange: the accent on the letter E was actually formed from a piece of materiel. We all watched as he stared at the letter E for a very long time. Then he slowly unpeeled the rolled-up cloth fro the blackboard and unfurled the biggest pair of polka dot panties anyone in the room had ever seen. — Jennifer Allison

When I was teaching children I began every day writing this on the blackboard: "Do to others what you would like them to do to you", telling them how much better the world would be if everybody lived by this rule. — Common

I was trouble - and always in trouble. Aged eight I still couldn't read. In fact, I was dyslexic and short-sighted. Despite sitting at the front of the class, I couldn't read the blackboard. Only after a couple of terms did anyone think to have my eyes tested. Even when I could see, the letters and numbers made no sense at all. — Richard Branson

When the truth would be unbearable the mind often just blanks it out. But some ghost of an event may stay in your head. Then, like the smudge of a bad word quickly wiped off a school blackboard, this ghost can call undue attention to itself by its very vagueness. You keep studying the dim shape of it, as if the original form will magically emerge. This blank spot in my past, then, spoke most loudly to me by being blank. It was a hole in my life that I both feared and kept coming back to because I couldn't quite fill it in. — Mary Karr

To me, the big thing in being a successful team is repetition of what you're doing, either by word of mouth, blackboard, or specifically by work on the field. You repeat, repeat, repeat as a unit. — Vince Lombardi

A young professor I watched in action at one of our large eastern colleges used to stand with his back to the class and mumble explanations of blackboard problems. He was "let out" at the end of two years because students refused to attend his classes. He was given an evasive reason for his dismissal and he left with justifiable bitterness toward the administration. If someone had told him the truth he could have avoided this denouement. Sometimes professors go on for years without any conception of remediable faults which irritate their listeners. — Mary Barnett Gilson

To feel the tender skin of sensitive child-fingers thicken; to feel the sex organs develop and call loudly to the flesh; to become aware of school, exams (the very words as unlovely as the sound of chalk shrilling on the blackboard,) bread and butter, marriage, sex, compatibility, war, economics, death and self. What a pathetic blighting of the beauty and reality of childhood. — Sylvia Plath

Teaching Ramanujan was like writing on a blackboard covered with excerpts from a more interesting lecture. — Lawrence Young

That was probably the reason that history was more of an oracle than a science. Perhaps later, muck later, it would be taught by means of tables of statistics, supplemented by anatomical sections. The teacher would draw on the blackboard an algebraic formula representing the conditions of life of the masses of a particular nation at a particular period: 'Here, citizens, you see the objective factors which conditioned this historical process. — Arthur Koestler

A lot of things look good on an academic's blackboard in terms of the actions that need to be taken. It's almost like a football coach, when you draw the X's and O's: Every play that is chalked on that board goes for a touchdown. Well, there are a lot of yards to be made between the line of scrimmage and the touchdown. — John O. Brennan

Forty years ago, Richard Branson, who ultimately founded Virgin Air, found himself in a similar situation in an airport in the Caribbean. They had just canceled his flight, the only flight that day. Instead of freaking out about how essential the flight was, how badly his day was ruined, how his entire career was now in jeopardy, the young Branson walked across the airport to the charter desk and inquired about the cost of chartering a flight out of Puerto Rico. Then he borrowed a portable blackboard and wrote, "Seats to Virgin Islands, $39." He went back to his gate, sold enough seats to his fellow passengers to completely cover his costs, and made it home on time. Not to mention planting the seeds for the airline he'd start decades later. Sounds like the kind of person you'd like to hire — Seth Godin

Without thought he repeated some words which a boy had once chalked on the blackboard between lessons: 'A lump of coal is better than nothing. Nothing is better than God. Therefore a lump of coal is better than God'. And then he traced his own name with his finger on the cracked and broken floor. — Peter Ackroyd

We had a teacher called Fanny Menlove, and I remember once when she was out of the room Nancy went up to the blackboard and wrote it backward - Menlove Fanny - and we all fell around laughing. She got into big trouble, but she didn't seem to mind. She had no fear. — Peter FitzSimons

The one constant through all the years has been baseball. America has rolled by like an army of steamrollers. It's been erased like a blackboard, rebuilt, and erased again. But baseball has marked the time. This field, this game, is a part of our past. It reminds us of all that once was good, and what could be again. — James Earl Jones

One can read all one wants, and spend eternities in front of a blackboard with a tutor, but one is not going to learn to swim until one gets in the water. — David Mamet

I am not fully forgiven until I allow God to write his new dream for my life on the blackboard of my mind.. God has a great plan to redeem society. He needs me and wants to use me. — Robert H. Schuller

His eyes are as green as a fresh pickled toad,
His hair is as dark as a blackboard.
I wish he was mine, he's really divine,
The hero who conquered the Dark Lord. — J.K. Rowling

The game of life does not proceed like a mathematical calculation on the principle that two and two make four. Sometimes they make five, or minus four, and sometimes the blackboard topples over in the middle of the sum and the pedagogue is left with a black eye. — Winston S. Churchill

With the threat of failure looming, students with the growth mindset set instead mobilized their resources for learning. They told us that they, too, sometimes felt overwhelmed, but their response was to dig in and do what it takes. They were like George Danzig. Who? George Danzig was a graduate student in math at Berkeley. One day, as usual, he rushed in late to his math class and quickly copied the two homework problems from the blackboard. When he later went to do them, he found them very difficult, and it took him several days of hard work to crack them open and solve them. They turned out not to be homework problems at all. They were two famous math problems that had never been solved. — Carol S. Dweck

The Dean's complaining to his Faculty. Why do you scientists need such expensive equipment? Why can't you be like the Math Department, which only needs a blackboard and a wastepaper basket? Better still, like the Department of Philosophy. That doesn't even need a wastepaper basket ... — Arthur C. Clarke

We try to make guests feel welcome," said Dee, scuttling behind his desk. He pulled off his pointed hat and, to Vimes's amazement, put on a pair of thick smoked glasses.
"You had papers?" he said. Vimes handed them over.
"It says here "His Grace"," the dwarf said, after reading them for awhile.
"Yes, that's me."
"And there's a sir."
"That's me, too."
"And an excellency."
"'fraid so." Vimes narrowed his eyes. "I was blackboard monitor for awhile, too. — Terry Pratchett

Sheepskin is a marvelously durable medium, though it has to be treated with some care. Whereas ink soaks into the fibers on paper, on sheepskin it stays on the surface, rather like chalk on a blackboard, and so can be rubbed away comparatively easily. "Sixteenth-century paper was of good quality, too," he went on. "It was made of rags and was virtually acid free, so it has lasted very well. — Bill Bryson

A kind of splendid confusion; it is something both shining and shapeless, at once a blaze and a blur. But the circle of the moon is as clear and unmistakable, as recurrent and inevitable, as the circle of Euclid on a blackboard. For the moon is utterly reasonable; and the moon is the mother of lunatics and has given to them all her name. CHAPTER III. - The Suicide — G.K. Chesterton