Quotes by : Rene Descartes

The two operations of our understanding, intuition and deduction, on which alone we have said we must....

I think therefore I am.

I hope that posterity will judge me kindly, not only as to the things which I have explained, but also....

The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived....

I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.....

When it is not in our power to follow what is true, we ought to follow what is most probable.

It is not enough to have a good mind the main thing is to use it well.

Perfect numbers like perfect men are very rare.

I think therefore I am.

A state is better governed which has few laws, and those laws strictly observed.