里氏替换原则是面向对象编程中的一个基本概念，确保派生类可以替代其基类使用，而不会改变程序的正确性。
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.
合作在研究中至关重要；没有人能独自解决大问题。
领导力意味着为了更美好的明天而在今天做出艰难的决定。
The complexity of a learning problem is often determined by the size and structure of the hypothesis space.
Envy is a really stupid sin because it’s the only one you could never possibly have any fun at. There’s a lot of pain and no fun. Why would you want to get on that trolley?
The market is a reflection of the economic fundamentals.
Philosophy is not a doctrine but an activity.
"A life without reflection is a life half-lived, and biography is the mirror."
不应幸灾乐祸，也不应在他人危难时加以利用！这仁义之心，太珍贵了！并且真正的强者不会在别人落难时出手，而是给予帮助！