“The specialist is a man who fears the other subjects.”

“The practice of medicine is a thinker's art the practice of surgery a plumber's.”

“The practice of medicine is a thinker's art the practice of surgery a plumber's.”

“Knowledge is a process of piling up facts wisdom lies in their simplification.”

“Thinking is the hardest work anyone can do, which is probably the reason why we have so few thinkers. ”

“Perhaps the logical conclusion of everyone looking the same is everyone thinking the same.”

“I could not think without writing.”

“A man is not idle because he is absorbed in thought. There is visible labor and there is invisible labor.”

“If only [people] understood that every thought is both false and true! False by one-sidenedness resulting from man's inability to embrace the whole truth, and true as an expression of one fact of h...”

“Ihr redet, wenn ihr aufhrt mit euren Gedanken in Frieden zu sein.”