True leadership in aggregates means balancing productivity with planetary responsibility.

Mathematics is the art of giving the same name to different things.

Human beings, viewed as behaving systems, are quite simple. The apparent complexity of our behavior over time is largely a reflection of the complexity of the environment in which we find ourselves.

The world is a tragedy to those who feel, but a comedy to those who think.

相机让每个人成为他人现实中的游客，最终也成为自己现实中的游客。

人类的状况是永恒的苦难。

每一本书都是一次旅程，每一页都是踏入未知的一步。