【释义】善于经商的商人会把珍贵的货物深藏起来，看上去好像一无所有；品德高尚的君子虽然拥有深厚的德行，却从不刻意张扬炫耀。

始终追求卓越，而不是完美。

Sustainable development is not a choice, but a responsibility.

I've learned that you can't control everything, but you can control how you react to it.

当老人们种下他们知道自己永远不会坐在其下的树时，社会就会变得伟大。

The challenge in computational learning theory is to understand the capabilities and limitations of learning algorithms.