从本质上来讲，儿童的爱是单纯的，他爱，是为了获得感官印象，这种印象又给他提供了生长的养料。

I don’t know what art is, but I know what it does.

The true value of oil lies in its ability to transform economies and societies.

The worth of a mental process is in its service to life.

Everyone seems very lonely, with their own way to find ways to escape loneliness; actually they still continue their own loneliness.

数学不仅仅是一系列抽象概念的集合，而是一种让我们理解宇宙的语言。

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。）