The joy of mathematics is in the struggle to understand.

Motto for a research laboratory: What we work on today, others will first think of tomorrow.

想象力是人类最自由的领地。

Never forget what you are, for surely the world will not. Make it your strength. Then it can never be your weakness. Armor yourself in it, and it will never be used to hurt you. 

写作是对抗遗忘的一种抵抗行为。