传记作者的挑战在于既要成为侦探，又要成为诗人。

真正的自由是思考、创造、梦想的自由。

In mathematics, the journey is just as important as the destination; the process of discovery is where the real learning happens.

A story is a way of preserving memory.

自然将人类置于两位至高无上的主人——痛苦和快乐的统治之下。