“The intelligent man finds everything laughable, the sensible man hardly anything.”

“Men show their characters in nothing more clearly than in what they think laughable. ”

“Man is not born to solve the problem of the universe, but to find out what he has to do; and to restrain himself within the limits of his comprehension.”

“Man muss immer tun, was man nicht lassen kann.”

“A clever man commits no minor blunders.”

“Es ist nicht genug, zu wissen, man muß auch anwenden; es ist nicht genug, zu wollen, man muß auch tun.”

“The suffering may be moral or physical; and in my opinion it is just as absurd to call a man a coward who destroys himself, as to call a man a coward who dies of a malignant fever.”