人类是唯一思考未来的动物。
The human being is the only animal that thinks about the future.
The demand to be loved is the greatest of all arrogant presumptions.
人类行为的首要原则是，一个人会做他认为能满足自己欲望的事情。
我们不是靠运气，而是靠勤奋和智慧走到今天的。