要理解递归，首先必须理解递归。

Writing is a way of bearing witness.

The poet is the one who makes the world sing.

The best stories are the ones that are not afraid to confront the darkness.

I like to think of mathematics as a kind of poetry.

真理的概念与自由的概念不可分割。

如果我比别人看得更远，那是因为我站在巨人的肩上。

海外项目要本土化经营，国际化标准。