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.

We call the one side [of humanity] religion, and we call the other science. Religion is always right. ... Science is always wrong; it is the very artifice of men. Science can never solve one problem without raising ten more problems.

A part of eugenic politics would finally land us in an extensive use of the lethal chamber. A great many people would have to be put out of existence simply because it wastes other people's time to look after them.

It is not the number of years we have behind us, but the number we have before us, that makes us careful and responsible and determined to find out the truth about everything.

You have nothing to do but mention the quantum theory, and people will take your voice for the voice of science, and belive anything.

In an ugly and unhappy world the richest man can purchase nothing but ugliness and unhappiness.

All progress depends upon the unreasonable person.