插图不仅仅是文字的装饰；它们是叙事过程中不可或缺的一部分。

You can always juice sales by going down-market, but it's hard to go back upmarket.

A good abstraction is one that emphasizes the essential and suppresses the irrelevant.

郦波在讲座中引用马克·吐温的话并加以阐释

心是身体的主宰，是众神的统帅。心静则能生智慧，心动则会导致昏乱。

Wisdom is the source of all happiness.

应对不自由世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。