Mathematics is not a spectator sport; you have to play to understand.

写作是一种快乐的方式。

战略的本质是选择一个独特且有价值的位置，这个位置植根于一系列难以匹配的活动系统中。

"The unsaid is often the most powerful."

All things are possible until they are proved impossible and even the impossible may only be so, as of now.

我不认为自己是一个照相写实主义者。我认为自己是一个现实主义画家。

聪明的人谈现在，愚蠢的人谈过去，傻子才谈未来。