未来是未知的，所以我们应该珍惜现在。

The poem is an act of the mind, not a transcription of the world.

心理现象最好被理解为环境需求与有机体反应之间的桥梁。

尽力而不能达到的，圣人不会苛责于人。应当尽心而未尽心，圣人不会推御责任。

The great walks with the small without fear. The middling keeps aloof.

In mathematics, the simplest questions often lead to the deepest insights.

I think the only free man can feel this kind of excitement, a free man step on a long journey, towards the uncertain future.

Sustainability starts with the soil; if we don’t care for it, nothing else matters.