Before I came here I was confused about this subject. Having listened to your lecture I am still confused. But on a higher level.

The best business model is a monopoly.

释义：上顺应于天，下取悦于民。使民众喜悦，人民便忘记了劳苦；用喜悦战胜困难，民众就会忘掉死亡的威胁，喜悦的作用太大了，它能勉励民众！

解释：甜味食物走肉，肉病的人不宜多食，说明饮食需与病症相宜。

四元数的诞生，如同几何、代数、形而上学和诗歌这四位父母的奇特后代。

The most important thing in a programming language is the name. A language will not succeed without a good name.

权力不是工具，而是一种关系。它存在于人与人之间，而不是人本身。