He who loses not his senses in certain things has no senses to lose
That must be wonderful; I have no idea of what it means
Where sense is wanting, everything is wanting
All credibility, all good conscience, all evidence of truth come only from the senses


On Anger: "For every minute you remain angry, you give up sixty seconds of peace of mind."
On Destiny: "Our destiny exercises its influence over us even when, as yet, we have not learned its nature: it is our future that lays down the law of our today."
Human, All Too Human
On Friendship: "A crowd is not company; and faces are but a gallery of pictures; and talk but a tinkling cymbal, where there is no love."