盈利和可持续性并不矛盾，它们必须齐头并进。

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.

最好的技术是那些隐形的技术。

The history of mathematics is a history of human curiosity and ingenuity.

The topic of leadership is a touchy one. A lot of leaders fail because they don’t have the bravery to touch that nerve or strike that chord. Throughout my years, I haven’t had that fear.

人类最伟大的追求是了解自己必须做什么才能成为一个人。