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There are no ifs in life, only consequences and results.

The future is not a gift. It is an achievement.

追求權力是國際體系中各國的首要目標。

The speech we hear is an indication of that which we don't hear. It is a necessary avoidance, a violent, sly, anguished or mocking smokescreen which keeps the other in its place.

Let what comes come. Let what goes go. Find out what remains.

數學之美不僅在于其抽象的優雅，還在于其建模和解決現實世界問題的深刻能力。