Descartes Senses Quotes & Sayings

Am I so tied to a body and senses that I am incapable of existing without them? — Rene Descartes

How do we know that anything really exists, that anything is really the way it seems ot us through our senses? — Rene Descartes

For, in fine, whether awake or asleep, we ought never to allow ourselves to be persuaded of the truth of anything unless on the evidence of our reason. And it must be noted that I say of our reason, and not of our imagination or of our senses: thus, for example, although we very clearly see the sun, we ought not therefore to determine that it is only of the size which our sense of sight presents; and we may very distinctly imagine the head of a lion joined to the body of a goat, without being therefore shut up to the conclusion that a chimaera exists; — Rene Descartes

Tell me what you make of Locke, then, and his difference with Descartes."
Vivian took the book from him and spread her small hand on the morocco leather binding. "Mr. Locke argues that the human mind is a blank tablet at birth... doesn't he?" She glanced at Morgan and received an encouraging nod. "And he claims that knowledge is founded in experience. Thought can only come after we learn through our senses. But I don't think I agree with him entirely. We are not born blank slates, are we? I think some things must exist in us at birth, before experience begins to work upon us. — Lisa Kleypas

You've read Descartes," he remarked, every syllable edged in disbelief. ""I should like to hear your opinion on Cartesian dualism, then."
Vivian thought for a long moment, inwardly relieved to discover that she understood the question. "I suppose you're referring to Mr. Descartes's theory that spirit and matter are separate entities? That we cannot rely on our senses as the basis of knowledge? I believe he is correct, and I think..." She paused and continued more slowly. "I think the truth is something you recognize with your heart, even when the evidence seems to prove otherwise. — Lisa Kleypas

But what then am I? A thing that thinks. What is that? A thing that doubts, understand, affirms, denies, wills, refuses, and that also imagines and senses. — Rene Descartes

One senses that Hegel was possible only in German, and finds it natural that Locke in a language where large and red precede apple should have arrived at the thing after sorting out its sensory qualities, whereas Descartes in a language where grosse et rouge follows pomme should have come to the attributes after the distinct idea. — Hugh Kenner

The nature of matter, or body considered in general, consists not in its being something which is hard or heavy or coloured, or which affects the senses in any way, but simply in its being something which is extended in length, breadth and depth. — Rene Descartes

The analytical geometry of Descartes and the calculus of Newton and Leibniz have expanded into the marvelous mathematical method-more daring than anything that the history of philosophy records-of Lobachevsky and Riemann, Gauss and Sylvester. Indeed, mathematics, the indispensable tool of the sciences, defying the senses to follow its splendid flights, is demonstrating today, as it never has been demonstrated before, the supremacy of the pure reason. — Nicholas Murray Butler

Seeing that our senses sometimes deceive us, I was willing to suppose that there existed nothing really such as they presented to us; and because some men err in reasoning, and fall into paralogisms, even on the simplest matters of geometry, I, convinced that I was as open to error as any other, rejected as false all the reasonings I had hitherto taken for demonstrations; and finally, when I considered that the very same thoughts (presentations) which we experience when awake may also be experienced when we are asleep, while there is at that time not one of them true, I supposed that all the objects (presentations) that had ever entered into my mind when awake, had in them no more truth than the illusions of my dreams. — Rene Descartes

I suppose therefore that all things I see are illusions; I believe that nothing has ever existed of everything my lying memory tells me. I think I have no senses. I believe that body, shape, extension, motion, location are functions. What is there then that can be taken as true? Perhaps only this one thing, that nothing at all is certain. — Rene Descartes