The greatest breakthroughs come from those who refuse to give up.

I'm not going to sit here and try to be someone I'm not.

爱情不需要理由。它来自心灵非理性的智慧。

数学的美在于它的简洁性和普遍性。

Disciplining yourself to do what you know is right and important, although difficult, is the highroad to pride, self-esteem, and personal satisfaction.