"If you always put limits on everything you do, physical or anything else, it will spread into your work and into your life. There are no limits. There are only plateaus, and you must not stay there, y…"

"All types of knowledge, ultimately, mean self-knowledge."

"The world is full of people who are determined to be somebody, or to get somewhere. They're all trying to make a name for themselves. But the man who is free from all these ambitions, he is the man wh…"

"Don't fear failure. Not failure, but low aim, is the crime. In great attempts it is glorious even to fail."

"Defeat is a state of mind; no one is ever defeated until defeat has been accepted as a reality."