"Life is a pendulum swinging between pain and boredom."

"The truth is that we are all born mad. Some remain so."

"The more intelligent a man is, the more he suffers."

"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."

"The fundamental error of all previous philosophy has been to regard man as a rational being."