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.

惩罚教会的是恐惧，而不是责任感。

预测未来的最佳方式就是去创造它。

旅程与目的地同样重要，或许更重要。

A leader's job is not to do the work for others, but to help others figure out how to do it themselves.

创新不在于技术，而在于解决实际问题。

Being wise means having more questions than answers.