爱之深，责之切。

The best way to predict the future is to invent it.

The purpose of morality is to teach you, not to suffer and die, but to enjoy yourself and live.

The best way to predict the future is to create it.

有一个快乐的境况出现，但就有一个不快乐的境况相对立；有一处优美的风景出现，但就立即有一处不优美的风景相抵销。

发愤研究学问，常常忘记吃饭，一旦有所收获便又高兴地忘记了忧愁，连自己的渐趋衰老也没有感觉到。