Little else is requisite to carry a state to the highest degree of opulence from the lowest barbarism but peace， easy taxes， and a tolerable administration of justice.

Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot.

作一个不满足的人，胜过一只满足的猪；作一个不幸的苏格拉底，胜过作一个满足的痴人。

Talent is not enough. You need the right attitude.

Poetry is not a luxury, but a necessity.

人心充满私欲，所以危险；道心符合天理，所以精妙。