There is no logical connection between flying and laying eggs.

Journalism is popular, but it is popular mainly as fiction. Life is one world, and life seen in the newspapers is another.

A man does not know what he is saying until he knows what he is not saying.

Christian Science … is the direct denial both of science and of Christianity, for Science rests wholly on the recognition of truth and Christianity on the recognition of pain.

Only poor men get hanged.

The main point of Christianity was this: that Nature is not our mother: Nature is our sister.

Science is the study of the admitted laws of existence, which cannot prove a universal negative about whether those laws could ever be suspended by something admittedly above them. It is as if we were to say that a lawyer was so deeply learned in the American Constitution that he knew there could never be a revolution in America.