None but the weak crave to be better than. Strong men are satisfied with their own strength.

To believe in something not yet proved and to underwrite it with our lives: It is the only way we can leave the future open.

When you stop learning, stop listening, stop looking and asking questions, always new questions, then it is time to die.

I broke every barrier I could to see things as they are.

None but the weak crave to be better than. Strong men are satisfied with their own strength.

The point of life is to find the delicate equilibrium between dream and reality.

To believe in something not yet proved and to underwrite it with our lives: it is the only way we can leave the future open. Man, surrounded by facts, permitting himself no surmise, no intuitive flash, no great hypothesis, no risk, is in a locked cell. Ignorance cannot seal the mind and imagination more surely.