世界会打击每一个人，但经历过后，许多人会在受伤的地方变得更坚强。

现代时代的问题是个人在面对社会机制的压倒性力量时的自我保存问题。

国际体系的无政府性质意味着国家必须依靠自助来确保其生存。

Stop being afraid of what could go wrong and start being excited about what could go right.

Insofar as a thing is in harmony with our nature， it is necessarily good.

The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.

实际上，教育是社会中所有人的最基本权利。

对任何农场来说，最好的肥料就是农民的足迹。