在数学中，提出问题的艺术必须比解决问题更有价值。
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.
译文：一个家族的衰败没落，多半是因为子孙们的骄傲懒惰所致；社会风气的败坏，多是因为富贵者的奢华淫靡所致。赏析：一个家族要想兴旺发达，必然有良好的家风传承，子孙门的骄奢淫逸只会让家族走向没落。
The most profound technologies are those that disappear. They weave themselves into the fabric of everyday life until they are indistinguishable from it.
The lesson of quantum mechanics is that we must revise our classical notions of reality.