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

Faith and doubt both are needed - not as antagonists, but working side by side to take us around the unknown curve.

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.

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

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

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.