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.

Love me or hate me，it's one or the other。Always has been。Hate my game，my swagger。Hate my fadeaway，my hunger。Hate that I'm a veteran。A champion。Hate that。Hate it with all your heart。And hate that I'm loved，for the exact same reasons。.

The more we know, the less we understand.

"We must constantly challenge our assumptions and be willing to change our minds."

We have to continually be jumping off cliffs and developing our wings on the way down.

"A book is a world you can hold in your hands."

吃饭不可不嚼便咽，走路不可不看便走，话不可不考虑便信口乱说，事不可不计划就贸然去做，衣服不能随便就脱，钱财不能随便据为已有，怒气不可不忍而任意发作，朋友不可不加选择地乱交。