领导力意味着即使不受欢迎也要做出艰难的决定。
Leadership means making tough decisions even when they are unpopular.
理性预期假说并不意味着人们能完美预测未来；它意味着人们不会犯系统性错误。
A proof tells us where to concentrate our doubts.
A thermonuclear war cannot be considered a continuation of politics by other means (according to the formula of Clausewitz). It would be a means of universal suicide.
《关睢》这首诗，快乐而不过分，哀婉而不伤恸。
Invert, always invert: Turn a situation or problem upside down.Look at it backward.
The world is a great mirror, and we are the reflections.