Arthur Schopenhauer — "The greatest error of all is to try to be happy."

"The only sure way not to be miserable is not to be born."

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

"It is a wise thing to be polite; consequently, it is a stupid thing to be rude. To make enemies by unnecessary and willful incivility, is just as insane a proceeding as to set your house on fire."

"The fundamental defect of the female character is a lack of the sense of justice. This arises from the fact that they are deficient in the faculty of reason and reflection, and are therefore unable to…"

"There is no doubt that life is given us, not to be enjoyed, but to be overcome; to be got over."