I wouldn't want to live if I did not have my work. In any case, it's good that I'm already old and personally don't have to count on a prolonged future.

I do not like to state an opinion on a matter unless I know the precise facts.

It is impossible to get anywhere without sinning against reason.

On the other hand, the concept owes its meaning and its justification exclusively to the totality of the sense impressions which we associate with it.

He who joyfully marches to music in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would suffice.

God is subtle but he is not malicious.

The most practical solution is a good theory.