数学不是一项观赏性运动。你必须参与其中。

Mental processes are the tools by which we build our survival.

I think of myself as somebody who from an early age knew I was resposible for myself， and I had to make good.

一幅画本身必须美丽，而不是因为它代表美丽的事物。

Confucious said that real knowledge is knowing the extent of one's ignorance.Aristotle and Socrates said the same thing.Is it a skill that can be taught or learned? It probably can, if you have enough of a stake riding on the outcome...