René Descartes Quotes

Illusory joy is often worth more than genuine sorrow.

I took especially great pleasure in mathematics because of the certainty and the evidence of its arguments.

So blind is the curiosity by which mortals are possessed, that they often conduct their minds along unexplored routes, having no reason to hope for success, but merely being willing to risk the experiment of finding whether the truth they seek lies there.

...we ought not meanwhile to make use of doubt in the conduct of life.

Thus the perception of the infinite is somehow prior in me to the perception of the finite, that is, my perception of God is prior to my perception of myself. For how would I understand that I doubt and that I desire, that is, that I lack something and that I am not wholly perfect, unless there were some idea in me of a more perfect being, by comparison with which I might recognize my defects?

The reading of all good books is like conversation with the finest men of past centuries.

If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.

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; for it is not a dictate of reason that what we thus see or imagine is in reality existent; but it plainly tells us that all our ideas or notions contain in them some truth.