The words of language, as they are written or spoken, do not seem to play any role in my mechanism of thought. The physical entities which seem to serve as elements in thought are certain signs and more or less clear images.

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

We will never be able to solve the problems of tomorrow with the thinking of today

You are right in speaking of the moral foundations of science, but you cannot turn around and speak of the scientific foundations of morality.

The creative principle [of science] resides in mathematics.

One picture is worth a thousand words

There is nothing divine about morality, it is a purely human affair.