Diplomacy is the art of restraining power.

The most dangerous thought you can have as a creative person is to think that you know what you're doing.

革命是一场漫长而艰苦的斗争，但只要有决心和团结，胜利是必然的。

To be a Jew is to be a witness.

心灵不是一个结构而是一个过程。