A man who has been the indisputable favorite of his mother keeps for life the feeling of a conqueror.

Civilized people have exchanged some part of their chances of happiness for a measure of security.

Opposition is not necessarily enmity.

Men are more moral than they think and far more immoral than they can imagine.

I was making frequent use of cocaine at that time ... I had been the first to recommend the use of cocaine, in 1885, and this recommendation had brought serious reproaches down on me.

The first requisite of civilization, therefore, is that of justice — that is, the assurance that a law once made will not be broken in favour of an individual. This implies nothing as to the ethical value of such a law.

When a man has once brought himself to accept uncritically all the absurdities that religious doctrines put before him and even to overlook the contradictions between them, we need not be greatly suprised at the weakness of his intellect.