"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 most spiritual men, as the strongest, find their happiness where others would find their ruin: in the labyrinth, in hardness against themselves and others, in experiments."

"The most common lie is that with which one lies to oneself; lying to others is relatively an exception."

"A man who has a 'why' to live, can bear almost any 'how'."

"I fear that we are not rid of God because we still have faith in grammar."