The price of greatness is responsibility.

The general will is always right， but the judgment which guides it is not always enlightened.

The only person who is educated is the one who has learned how to learn and change.

两个灵魂的相遇就像两种化学物质的接触：一丁点的反应就会彻底改变它们。

质量不是一种行为，而是一种习惯。