It is from among such individuals that all human failures spring.

In the company of friends, writers can discuss their books, economists the state of the economy, lawyers their latest cases, and businessmen their latest acquisitions, but mathematicians cannot discuss their mathematics at all. And the more profound their work, the less understandable it is.

Tears and complaints - the means which I have called water power - can be an extremely useful weapon for disturbing cooperation and reducing other to a condition of slavery.

I am grateful for the idea that has used me.

It is always easier to fight for one's principles than to live up to them.

You can be healed of depression if every day you begin the first thing in the morning to consider how you will bring a real joy to someone else.

Our modern states are preparing for war without even knowing the future enemy.