The best programs are written so that computing machines can perform them quickly and so that human beings can understand them clearly. A programmer is ideally an essayist who works with traditional aesthetic and literary forms as well as mathematical concepts, to communicate the way that an algorithm works and to convince a reader that the results will be correct.

The most successful societies are those that have been able to balance the need for a strong state with the need for individual freedom.

In every real man a child is hidden that wants to play.

在私利面前能够想到道义，遇到危难能够挺身而出，虽然长期生活在贫困之中，也没有忘记平生的诺言，这样就可以说是一个十全十美的人了。

The environment will appear different to different observers depending on what they are prepared to see.