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The Liskov Substitution Principle is a fundamental concept in object-oriented programming, ensuring that derived classes can be used in place of their base classes without altering the correctness of the program.

大海是靈魂的鏡子——無(wú)盡、變幻、深不可測(cè)。

Marxian Socialism must always remain a portent to the historians of Opinion — how a doctrine so illogical and so dull can have exercised so powerful and enduring an influence over the minds of men， and， through them， the events of history.

最終，我們將記住的不是敵人的話語(yǔ)，而是朋友的沉默。

預(yù)測(cè)未來(lái)的最好方法就是創(chuàng)造未來(lái)。