Combinatorics is like the art of counting without actually counting.

我不是男孩，我是女孩。

The most hateful torment for men is to have knowledge of everything but power over nothing.

科学应当为人类服务，而不是反过来。

The world is so unpredictable. Things happen suddenly, unexpectedly. We want to feel we are in control of our own existence. In some ways we are, in some ways we're not. We are ruled by the forces of chance and coincidence.