"The two great narcotics of Europe, alcohol and Christianity."

"It is not a lack of love, but a lack of friendship that makes unhappy marriages."

"Every deep thinker is more afraid of being understood than of being misunderstood."

"He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying."

"The state, I call it, where all are poison-drinkers, the good and the bad: the state, where all lose themselves, the good and the bad: the state, where the slow suicide of all is called 'life.'"