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.
The personal is historical, and the historical is personal.
你忘记了你想记住的，却记住了你想忘记的。
Fearless is not the absence of fear. It’s not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things that scare you to death.
拥有得越多，欲望就越大。
The best leaders are those most interested in surrounding themselves with assistants and associates smarter than they are.