Confidence comes from preparation and knowing your stuff.

The key to performance is elegance, not battalions of special cases.

而义能够让民众得利，所以说∶义是天下值得珍视的宝物。 

The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.

我们民主的最大祝福是自由。但归根结底，我们唯一的自由是自律的自由。

我对这场战争了解的不多，但我知道美国的很多年轻人都参与了这场战争。

"The world begins at a kitchen table. No matter what, we must eat to live."

在生命中，最微不足道但有意义的事物，也比最伟大但无意义的事物更有价值。