Human Brain Evolution Quotes & Sayings

He always reminded us that every atom in our bodies was once part of a distant star that had exploded. He talked about how evolution moves from simplicity toward complexity, and how human intelligence is the highest known expression of evolution. I remember him telling me that a frog's brain is much more complex than a star. He saw human consciousness as the first neuron of the universe coming to life and awareness. A spark in the darkness, waiting to spread to fire. — Greg Iles

How does the biological wetware of the brain give rise to our experience: the sight of emerald green, the taste of cinnamon, the smell of wet soil? What if I told you that the world around you, with its rich colors, textures, sounds, and scents is an illusion, a show put on for you by your brain? If you could perceive reality as it really is, you would be shocked by its colorless, odorless, tasteless silence. Outside your brain, there is just energy and matter. Over millions of years of evolution the human brain has become adept at turning this energy and matter into a rich sensory experience of being in the world. — David Eagleman

with rare exceptions (chiefly the social insects), mammals and birds are the only organisms to devote substantial attention to the care of their young; an evolutionary development that, through the long period of plasticity which it permits, takes advantage of the large information-processing capability of the mammalian and primate brains. Love seems to be an invention of the mammals. — Carl Sagan

My main reason for scepticism about the Huxley/Sagan theory is that the human brain is demonstrably eager to see faces in random patterns, as we know from scientific evidence, on top of the numerous legends about faces of Jesus, or the Virgin Mary, or Mother Teresa, being seen on slices of toast, or pizzas, or patches of damp on a wall. This eagerness is enhanced if the pattern departs from randomness in the specific direction of being symmetrical. — Richard Dawkins

The genes hold culture on a leash. The leash is very long, but inevitably values will be constrained in accordance with their effects on the human gene pool. The brain is a product of evolution. Human behavior-like the deepest capacities for emotional respone which drive and guide it-is the circuitous technique by which human genetic material has been and will be kept intact. — E. O. Wilson

Put simply, behavioural economics argues that human beings' decision-taking is guided by the evolutionary baggage which we bring with us to the present day. Evolution has made us rational to a point, but not perfectly so. It has given us emotions, for example, which programme us to override our rational brain and act more instinctively. — Evan Davis

Thinking is a physical process, the human brain is not exempt from evolution — Steven Pinker

The evolution of the human brain is inextricably interwoven with the expansion of culture and the emergence of language. Thus, it is no coincidence that human beings are story tellers. Through countless generations, humans have gathered to listen to stories of the hunt, the exploits of their ancestors, and morality tales of good and evil...Thus, I believe that both the urge to tell a tale and our vulnerability to being captivate by one are deeply woven into the structures of our brains — Louis Cozolino

[D]umb evolutionary processes have dramatically amplified the intelligence in the human lineage even compared with our close relatives the great apes and our own humanoid ancestors; and there is no reason to suppose Homo sapiens to have reached the apex of cognitive effectiveness attainable in a biological system. — Nick Bostrom

Most of our brain cells are glial cells, once thought to be mere support cells, but now understood as having a critical role in brain function. Glial cells in the human brain are markedly different from glial cells in other brains, suggesting that they may be important in the evolution of brain function. — Thomas R. Insel

People believe in God because the world is very complicated and they think it is very unlikely that anything as complicated as a flying squirrel or the human eye or a brain could happen by chance. — Mark Haddon

An example of perfection in nature is the cockroach. It was living six million years before us and it may outlast us by that long. The brain of a cockroach is a splendid little engine. It doesn't evolve and it doesn't need to. The human brain is a disaster from the point of view of perfection
great intellectual power combined with primitive emotional reactions. Human beings today are living with terrible risks of their own creation
nuclear weapons, the exploitation of natural resources, the great disparity between the wealthy and the poor. Our brains will probably bring us to destruction, but we also have the possibility of growth, evolution. I prefer being a human. We shouldn't always look for perfection, in nature or our lives. — Rita Levi-Montalcini

Plasticity is an intrinsic property of the human brain and represents evolution's invention to enable the nervous system to escape the restrictions of its own genome and thus adapt to environmental pressures, physiologic changes, and experiences. — Philippa Perry

Natural selection has served as a kind of intellectual sieve, producing brains and intelligences increasingly competent to deal with the laws of nature. — Carl Sagan

Finally, our new brain needs a purpose. A purpose is expressed as a series of goals. In the case of our biological brains, our goals are established by the pleasure and fear centers that we have inherited from the old brain. These primitive drives were initially set by biological evolution to foster the survival of species, but the neocortex has enabled us to sublimate them. Watson's goal was to respond to Jeopardy! queries. Another simply stated goal could be to pass the Turing test. To do so, a digital brain would need a human narrative of its own fictional story so that it can pretend to be a biological human. It would also have to dumb itself down considerably, for any system that displayed the knowledge of, say, Watson would be quickly unmasked as nonbiological. — Ray Kurzweil

However, we have the benefits of the billions of years of evolution that have already taken place, which are responsible for the greatly increased order of complexity in the natural world. We can now benefit from it by using our evolved tools to reverse engineer the products of biological evolution (most importantly, the human brain). — Ray Kurzweil

In a way, science might be described as paranoid thinking applied to Nature: we are looking for natural conspiracies, for connections among apparently disparate data. Our objective is to abstract patterns from Nature (right-hemisphere thinking), but many proposed patterns do not in fact correspond to the
data. Thus all proposed patterns must be subjected to the sieve of critical analysis (left-hemisphere thinking). — Carl Sagan

Evolution sceptic: Professor Haldane, even given the billions of years that you say were available for evolution, I simply cannot believe it is possible to go from a single cell to a complicated human body, with its trillions of cells organized into bones and muscles and nerves, a heart that pumps without ceasing for decades, miles and miles of blood vessels and kidney tubules, and a brain capable of thinking and talking and feeling. JBS: But madam, you did it yourself. And it only took you nine months. — Richard Dawkins

We should not be too quick to dismiss our own [ocular] arrangement. As so often in biology, the situation is more complex ... we have the advantage that our own light-sensitive cells are embedded directly in their support cells (the retinal pigment epithelium) with an excellent blood supply immediately underneath. Such an arrangement supports the continuous turnover of photosensitive pigments. The human retina consumes even more oxygen than the brain, per gram, making it the most energetic organ in the body. — Nick Lane

Scholars once proclaimed that the agricultural revolution was a great leap forward for humanity. They told a tale of progress fuelled by human brain power. Evolution gradually produced ever more intelligent people. Eventually, people were so smart that they were able to decipher nature's secrets, enabling them to tame sheep and cultivate wheat. As soon as this happened, they cheerfully abandoned the gruelling, dangerous, and often spartan life of hunter-gatherers, settling down to enjoy the pleasant, satiated life of farmers. — Yuval Noah Harari

Man is not going to wait passively for millions of years before evolution offers him a better brain. — Corneliu E Giurgea

It is very difficult to evolve by altering the deep fabric of life; any change there is likely to be lethal. But fundamental change can be accomplished by the addition of new systems on top of old ones. — Carl Sagan

For three million years we were hunter-gatherers, and it was through the evolutionary pressures of that way of life that a brain so adaptable and so creative eventually emerged. Today we stand with the brains of hunter-gatherers in our heads, looking out on a modern world made comfortable for some by the fruits of human inventiveness, and made miserable for others by the scandal of deprivation in the midst of plenty. — Richard E. Leakey

In creating the human brain, evolution has wildly overshot the mark. — Arthur Koestler

Life is unlikely to end with humans, even if we burn in a nuclear holocaust. The relentless wheel of evolution will pick up from where we leave off and roll to it's predestined goal. If the human mind continues to evolve, enlarge, and expand, so that we are able to recognize our kinship with the creations around us, so that we are able to grasp our oneness with the cosmos, and so that we merge in yoga with the Divine, the long cosmic cycle will disclose its cryptic secret, and the long saga of billions of years of evolution will display its profound significance. — Roy J. Mathew

The human mind has a desire to know its place in the universe and the role we play in the tapestry of life. This is actually hardwired into our brains, the desire the know our relationship to the universe. This was good for our evolution, since it enabled us to see our relationship to others and to nature which was good for our survival. And it is also what drives our curiosity to understand the universe. — Michio Kaku

There is a common misconception that the human brain is the pinnacle of billions of years of evolution. This may be true if we think of the entire nervous system. However, the human neocortex itself is a relatively new structure and hasn't been around long enough to undergo much long-term evolutionary refinement. — Jeff Hawkins

I've always been fascinated with adrenaline; it's saved my life more than once, and it's caused me to need it to save my life more than once. One of the most fascinating responses in human evolution, adrenaline sharpens your brain; it sharpens your responses. — Craig Venter

In modern neurotheology we examine the physical bases to spiritual, religious and mystical experiences and beliefs, that implicitly appear to reduce this rich phenomenology to only neuronal functions. So, the thing is, there was no divine intervention necessary in the evolution of spirituality and religiosity. "Human Brain is the true God of all beliefs". — Abhijit Naskar

It is interesting that it is not the getting of any sort of knowledge that God has forbidden, but, specifically, the knowledge of the difference between good and evil-that is, abstract and moral judgments, which, if they reside anywhere, reside in the neocortex. — Carl Sagan

The human brain is still undergoing rapid adaptive evolution,. — Howard Hughes

Much more plausible is the computer-based explanation that dreams are a spillover from the unconscious processing of the day's experience, from the brain's decision on how much of the daily events temporarily stored in a kind of buffer to emplace in long-term memory... The American psychiatrist Ernest Hartmann of Tufts University has provided
anecdotal but reasonably persuasive evidence that people who are engaged in intellectual activities during the day, especially unfamiliar intellectual activities, require more sleep at night, while, by and large, those engaged in mainly repetitive and intellectually unchallenging tasks are able to do with much less sleep. — Carl Sagan

MacLean has shown that the R-complex plays an important role in aggressive behavior, territoriality, ritual and the establishment of social hierarchies. Despite occasional welcome exceptions, this seems to me to characterize a great deal of modern human bureaucratic and political behavior. — Carl Sagan

Perhaps the locale of the subjunctive mood will
one day be found. Will Latins turn out to be extravagantly endowed and English-speaking peoples significantly short-changed in this minor piece of brain anatomy? — Carl Sagan

Those mothers with hereditary large pelvises were able to bear large-brained babies who because of their superior intelligence were able to compete successfully in adulthood with the smaller-brained offspring of mothers with smaller pelvises. — Carl Sagan

The talent for self-justification is surely the finest flower of human evolution, the greatest achievement of the human brain. When it comes to justifying actions, every human being acquires the intelligence of an Einstein, the imagination of a Shakespeare, and the subtlety of a Jesuit. — Michael Foley

Just about every adult human being back then had a brain weighing about three kilogrammes! There was no end to the evil schemes that a thought machine that oversized couldn't imagine and execute.
So I raise this question, although there is nobody around to answer it: Can it be doubted that three-kilogramme brains were once nearly fatal defects in the evolution of the human race? — Kurt Vonnegut

There is no doubt that right-hemisphere intuitive thinking may perceive patterns and connections too difficult for the left hemisphere; but it may also detect patterns where none exist. Skeptical and
critical thinking is not a hallmark of the right hemisphere. And unalloyed right-hemisphere doctrines, particularly when they are invented during new and trying circumstances, may be erroneous or paranoid. — Carl Sagan

The complex organic device that creates and thereafter drives consciousness, is the human brain. Consciousness evolved hand in hand with the evolution of the human brain throughout a time span of six million years. — Abhijit Naskar

On the other hand, mere critical thinking, without creative and intuitive insights, without the search for new patterns, is sterile and doomed. To solve complex problems in changing circumstances requires the activity of both cerebral hemispheres: the path to the future lies through the corpus callosum. — Carl Sagan

There was something built into the human brain by natural selection which was once useful, and which now manifests itself as religion. — Richard Dawkins

I was taught that the human brain was the crowning glory of evolution so far, but I think it's a very poor scheme for survival. — Kurt Vonnegut

Some evidence suggests the left-handers are more likely to have problems with such left-hemisphere functions as reading, writing, speaking and arithmetic; and to be more adept at such right -hemisphere functions as imagination, pattern recognition and general creativity. — Carl Sagan

Our great human adventure is the evolution of consciousness. We are in this life to enlarge the soul, liberate the spirit, and light up the brain. — Tom Robbins

So far as I know, childbirth is generally painful in only one of the millions of species on Earth: human beings. This must be a consequence of the recent and continuing increase in cranial volume... Childbirth is painful because the evolution of the human skull has been spectacularly fast and recent. — Carl Sagan