"A book is a mirror: if an ape looks into it, an apostle is unlikely to look out."

青年的危机不是生物性的，而是社会和政治性的，它需要一种新的语言来理解他们斗争性质的变化。

真正的成功是内心的平静。

You are never too old to set another goal or to dream a new dream.

A company shouldn't get addicted to being shiny， because shiny doesn't last.

The PAC learning framework provides a formal way to analyze the efficiency and effectiveness of learning algorithms.