The only way to learn mathematics is to do mathematics.

Humility is the mark of a great leader.

To be a nurse is to walk with people through some of the most vulnerable times of their lives.

地理学是研究地方的科学。它的视野宏大，视角全景。

自私是永远存在的。

释义：有时候轻易相信了别人的话，但最终真相会被明白事理的人指出，公道自在人心。