Successful action tends to become an end in itself.

You can never get enough of what you don't need to make you happy.

Anger is a prelude to courage.

The link between ideas and action is rarely direct. There is almost always an intermediate step in which the idea is overcome.

He who has nothing and wants something is less frustrated than he who has something and wants more.

people with a sense of fulfillment think it is a good world and would like to conserve it as it is, while the frustrated favor radical change.

Our sense of power is more vivid when we break a man's spirit than when we win his heart.