The heart is a fragile thing, easily broken, but also capable of great strength.

"The most important thing in empirical work is to be clear about the question you are trying to answer."

The purpose of advertising is to sell. It is the only purpose.

任何牺牲基本自由以换取短暂安全的人，最后既得不到安全也得不到自由。（放弃基本的自由以换取苟安的人，终归失去自由，也得不到安全。）