数学中最深刻的思想往往源于最简单的观察。

A nation's destiny is in its own hands.

心理学是精神生活的科学。

The biggest pressure is the pressure I put on myself.

To think is to confine yourself to a single thought that one day stands still like a star in the world's sky.

如果你走在正确的道路上，并且愿意继续走下去，那你总有一天会取得进步。