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There is nothing so far removed from us as to be beyond our reach, or so hidden that we cannot discover it.
Rene Descartes -
This result could have been achieved either by his God endowing my intellect with a clear and distinct perception of everything about which I would ever deliberate, or simply by impressing the following rule so firmly upon my memory that I could never forget it: I should never judge anything that I do not clearly and distinctly understand.
Rene Descartes
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Nothing comes out of nothing.
Rene Descartes -
I did not imitate the skeptics who doubt only for doubting's sake, and pretend to be always undecided; on the contrary, my whole intention was to arrive at a certainty, and to dig away the drift and the sand until I reached the rock or the clay beneath.
Rene Descartes -
About Pierre de Fermat. It cannot be denied that he has had many exceptional ideas, and that he is a highly intelligent man. For my part, however, I have always been taught to take a broad overview of things, in order to be able to deduce from them general rules, which might be applicable elsewhere.
Rene Descartes -
I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.
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 -
Human wisdom remains always one and the same although applied to the most diverse objects and it is no more changed by their diversity than the sunshine is changed by the variety of objects which it illuminates.
Rene Descartes
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I hope that posterity will judge me kindly, not only as to the things which I have explained, but also to those which I have intentionally omitted so as to leave to others the pleasure of discovery.
Rene Descartes -
... regard this body as a machine which, having been made by the hand of God, is incomparably better ordered than any machine that can be devised by man, and contains in itself movements more wonderful than those in any machine. ... it is for all practical purposes impossible for a machine to have enough organs to make it act in all the contingencies of life in the way in which our reason makes us act.
Rene Descartes -
Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have.
Rene Descartes -
It is possible that I am dreaming right now and that all of my perceptions are false.
Rene Descartes -
The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge.
Rene Descartes -
For how do we know that the thoughts which occur in dreaming are false rather than those others which we experience when awake, since the former are often not less vivid and distinct than the latter?
Rene Descartes
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But I cannot forget that, at other times I have been deceived in sleep by similar illusions; and, attentively considering those cases, I perceive so clearly that there exist no certain marks by which the state of waking can ever be distinguished from sleep, that I feel greatly astonished; and in amazement I almost persuade myself that I am now dreaming.
Rene Descartes -
It is to the body alone that we should attribute everything that can be observed in us to oppose our reason.
Rene Descartes -
You just keep pushing. You just keep pushing. I made every mistake that could be made. But I just kept pushing.
Rene Descartes -
But possibly I am something more than I suppose myself to be.
Rene Descartes -
There is a little gland in the brain in which the soul exercises its functions in a more particular way than in the other parts.
Rene Descartes -
Let whoever can do so deceive me, he will never bring it about that I am nothing, so long as I continue to think I am something.
Rene Descartes
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Neither the true nor the false roots are always real; sometimes they are imaginary; that is, while we can always imagine as many roots for each equation as I have assigned, yet there is not always a definite quantity corresponding to each root we have imagined.
Rene Descartes -
For I found myself embarrassed with so many doubts and errors that it seemed to me that the effort to instruct myself had no effect other than th eincreasing discovery of my own ignorance.
Rene Descartes -
There is nothing so strange and so unbelievable that it has not been said by one philosopher or another.
Rene Descartes -
The entire method consists in the order and arrangement of the things to which the mind's eye must turn so that we can discover some truth.
Rene Descartes