About God, I cannot accept any concept based on the authority of the Church... As long as I can remember. I have resented mass indoctrination. I cannot prove to you there is no personal God, but if I were to speak of him, I would be a liar. I do not believe in the God of theology who rewards good and punishes evil. His universe is not ruled by wishful thinking, but by immutable laws

In conclusion I wish to say that in working at the problem here dealt with I have had the loyal assistance of my friend and colleague M. Besso, and that I am indebted to him for several valuable suggestions.

Most people see what is, and never see what can be.

The true value of a human being can be found in the degree to which he has attained liberation from the self.

My pacifism is not based on any intellectual theory but on a deep antipathy to every form of cruelty and hatred.

I do not believe in the God of theology who rewards good and punishes evil.

Freedom of teaching and of opinion in book or press is the foundation for the sound and natural development of any people.