解读：不劳而获、投机取巧所得快乐转瞬即逝，唯有持续付出汗水与心血，攻克难题、实现目标，由此产生的快乐才扎实、长久，激励踏实奋斗。

No arts； no letters； no society； and which is worst of all， continual fear and danger of violent death； and the life of man， solitary， poor， nasty， brutish， and short.

设计不仅仅是关于形式和功能，而是关于生活和关系。

(Physics is) a good framework for thinking....Boil things down to their fundamental truths and reason up from there.

A program without a loop and a structured variable isn't worth writing.