Happiness is a good flow of life； the conviction that you are taking part in the universe's purpose.

学习本质上是刺激-反应连接的问题。

In this trifling affair， that misunderstandings and neglect occasion more mischief in the world than even malice and wickedness. At all events， the two latter are of less frequent occurrence.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

A writer’s job is to notice the things others miss.

农业的未来在于平衡生产力与环境管理的可持续实践。

我不遵循规则，我遵循我的本能。

译文：我衰老得太厉害了!感慨平生交游的朋友渐渐零落，如今还剩下几个?白发空自垂下三千丈，对人间万事只能付之一笑。试问什么事物能让我真正欢喜?