With me, everything turns into mathematics.

In God there is an infinitude of things which I cannot comprehend, nor possibly even reach in any way by thought; for it is the nature of the infinite that my nature, which is finite and limited, should not comprehend it.

I think; therefore I am.

The chief cause of human errors is to be found in the prejudices picked up in childhood.

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

The only thing that I know, is that I know nothing

I accept no principles of physics which are not also accepted in mathematics.