Psychology is a science, and teaching is an art; and sciences never generate arts directly out of themselves.

"The function of freedom is to free someone else."

"The past is a foreign country; they do things differently there."

医学的未来在于从分子层面理解化学。

我不在乎出名，我在乎的是变得伟大。

预测农业未来的最好方法就是创造未来。