224 Quotes by Rene Descartes

It is only prudent never to place complete confidence in that by which we have even once been deceived.

To live without philosophizing is in truth the same as keeping the eyes closed without attempting to open them.

And thus, the actions of life often not allowing any delay, it is a truth very certain that, when it is not in our power to determine the most true opinions we ought to follow the most probable.

Dubium sapientiae initium (Doubt is the origin of wisdom).

Except our own thoughts, there is nothing absolutely in our power.

I desire to live in peace and to continue the life I have begun under the motto 'to live well you must live unseen

And, in fine, of false sciences I thought I knew the worth sufficiently to escape being deceived by the professions of an alchemist, the predictions of an astrologer, the impostures of a magician, or by the artifices and boasting of any of those who profess to know things of which they are ignorant.

Dubium sapientiae initium. (Doubt is the origin of wisdom.)

...the greater objective (representative) perfection there is in our idea of a thing, the greater also must be the perfection of its cause.