Religion is a system of wishful illusions together with a disavowal of reality, such as we find nowhere else but in a state of blissful hallucinatory confusion. Religion's eleventh commandment is "Thou shalt not question."

The Devil would be the best way out as an excuse for God; in that way he would be playing the same part as an agent of economic discharge as the Jew does in the world of the Aryan ideal. But even so, one can hold God responsible for the existence of the Devil just as well as for the existence of the wickedness which the Devil embodies.

There is an intellectual function in us which demands unity, connection and intelligibility from any material, whether of perception or thought, that comes within its grasp; and if, as a result of special circumstances, it is unable to establish a true connection, it does not hesitate to fabricate a false one.

So in every individual the two trends, one towards personal happiness and the other unity with the rest of humanity, must contend with each other.

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.

One... gets an impression that civilization is something which was imposed on a resisting majority by a minority which understood how to obtain possession of the means to power and coercion. It is, of course, natural to assume that these difficulties are not inherent in the nature of civilization itself but are determined by the imperfections of the cultural forms which have so far been developed.

If it's not one thing, it's your mother.