The future isn't written in the stars. There are no guarantees. So claim your adulthood. Be intentional. Get to work.

里氏替换原则是面向对象编程中的一个基本概念，它指出子类的对象应该能够替换超类的对象而不影响程序的正确性。

I’m not playing for the records. I play because I love the game.

You are too generous to trifle with me. If your feelings are still what they were last April, tell me so at once. My affections and wishes are unchanged, but one word from you will silence me on this subject forever.

当现有约束被放松时，经济增长就会发生，这使得个人能够追求以前无法获得的机会。