对人类来说，最可恨的痛苦是知道一切却无能为力。

心灵是一个相互关联的过程系统。

所有模型都是错误的，但有些是有用的。

The future of dairy lies in meeting consumer demands while protecting our planet.

The great and chief end, therefore, of men's uniting into commonwealths and putting themselves under government is the preservation of their property.

花开时不能一同欣赏，花落时也无法一同悲伤。