"The most depraved type of human being is the man without a purpose."

"The small minority of men who are able to conceive of a new idea are the only men who discover truths. The rest are but the echoes of other men's thoughts."

"The only good is the good of the individual."

"A man's sexual choice is the result and the sum of his fundamental convictions. Tell me what a man finds sexually attractive and I will tell you his entire philosophy of life."

"The hardest thing to explain is the obvious."