A true mathematician is always a student, always learning.

人生是一系列的选择，而最难的那些才是最重要的。

The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.

My biggest opponent is myself.

凡是存在的事物就天然具有合理性。

Every challenge is an opportunity to learn and grow.