里氏替换原则是面向对象编程中的一个基本概念，它指出子类的对象应该能够替换超类的对象而不影响程序的正确性。

The Liskov Substitution Principle is a fundamental concept in object-oriented programming, stating that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.

芭芭拉·利斯科夫

在一切创造物中间没有比人的心灵更美、更好的东西了。

海涅

事实上，无论如何，正确理解他人并非生活的全部。误解才是生活，误解、误解、再误解，然后经过仔细的重新考虑，再次误解。

The fact remains that getting people right is not what living is all about anyway. It’s getting them wrong that is living, getting them wrong and wrong and wrong and then, on careful reconsideration, getting them wrong again.

菲利普·罗斯

结交须胜己，似我不如无。

周希陶

The beauty of the Langlands program lies in its ability to reveal hidden connections.

朗兰兹纲领的美在于它能够揭示隐藏的联系。

罗伯特·朗兰兹

艺术家是罪犯和疯子的兄弟。

The artist is the brother of the criminal and the madman.

托马斯·曼

十四行诗诗集中的一首：那天下午快到末梢，我正习惯地向你说再见，一种要离开你时模糊的痛苦，让我懂得我已经爱上了你。

博尔赫斯

其实人跟树是一样的，越是向往高处的阳光，它的根就越要伸向黑暗的地底。

尼采

我很喜欢圣奥古斯丁在“上帝之城”里的一句话，他说“以社会地位评价人是一种罪”。用现在的口吻说，看一个人的名片来决定你是否要和他交谈是罪。对圣奥古斯丁来说，人的价值不在他的社会地位，只有神可以决定一个人的价值，他将在天使围绕、小号奏鸣，天空破开的世界末日给于最后审判，如果你是像我一样的世俗论者，这想法太疯狂了，但这想法有它的价值。

I'm drawn to a lovely quote by St. Augustine in "The City of God," where he says, "It's a sin to judge any man by his post." In modern English that would mean it's a sinto come to any view of who you should talk to, dependent on their business card. It's not the post that should count. According to St. Augustine, only God can really put everybody in their place; he's going to do that on the Day of Judgment, with angels and trumpets, and the skies will open. Insane idea, if you're a secularist person, like me. But something very valuable in that idea, nevertheless.