"The only way to escape the suffering of life is to kill oneself."

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

"The state is nothing but a large-scale institution for the protection of property."

"The value of a man is not measured by the number of truths he has accumulated, but by the extent to which he has freed himself from error."

"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."