The most difficult thing is to be simple.

The artist must be a philosopher and a poet.

The simple step of a courageous individual is not to take part in the lie. One word of truth outweighs the world. In keeping silent about evil, in burying it so deep within us that no sign of it appears on the surface, we are implanting it, and it will rise up a thousand fold in the future.

数学是理性的音乐。

历史不会重复，但会押韵。