Painting is a way to forget life. It is a cry in the night, a strangled laugh.

Abstraction is the key to managing complexity in software systems.

我们不需要完美的知识来采取明智的行动。

Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.

The essence of science is not to complicate the simple, but to simplify the complex.

文学是问题减去答案。