I have prophesied about the faith of Muhammad that it would be acceptable to the Europe of tomorrow as it is beginning to be acceptable to the Europe of today. ... I believe that if a man like him were to assume the dictatorship of the modern world he would succeed in solving its problems in a way that would bring it the much-needed peace and happiness.

At present, intelligent people do not have their children vaccinated, nor does the law now compel them to. The result is not, as the Jennerians prophesied, the extermination of the human race by smallpox; on the contrary more people are now killed by vaccination than by smallpox.

This is my father. Try what you can with him! He won't listen to me, because he remembers what a fool I was when I was a baby.

Though justice be Thy plea, consider this: That in the course of justice none of us should see salvation. We do pray for mercy, And that same prayer doth teach us all to render The deeds of mercy.

No severity of punishment deters when detection is uncertain, as it always must be.

The right to know is like the right to live. It is fundamental and unconditional in its assumption that knowledge, like life, is a desirable thing.

Progress is impossible without change; and those who cannot change their minds cannot change anything.