未经审视的生活不值得过。

最美的风景在攀登最艰难的山峰之后。

数学不是沿着一条清理干净的高速公路小心翼翼地行进，而是一次进入陌生荒野的旅程，探险者常常会迷路。

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.

唯一的好是知识，唯一的恶是无知。