The essence of mathematics lies in its freedom.

I always try to find the truth in my characters.

The biggest risk is not taking any risk.

语言学习应该是一段快乐的旅程，而不是一项乏味的任务。

Small improvements, consistently applied, lead to massive change over time.

语言是一种皮肤：我用我的语言摩擦对方。就好像我有的是词语而不是手指，或者我的词语尖端有手指。

Collaboration is essential in research; no one can solve big problems alone.