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.

We're not just making a better burger. We're creating a better future.

When you work on hard problems long enough, you start to see connections where others see only confusion.

做伟大的工作的唯一方法就是热爱你所做的事情。

译文：锋利的刀割伤身体，伤口还可以愈合，而恶毒的话语伤了人，就会积下仇恨很难消除。赏析：良言一句三冬暖，恶语伤人六月寒。人要多说良言，少说恶语。即使我们要给对方提建议，也要掌握分寸，不可在交谈中有伤人之语。

I don't fear failure. I fear not trying.

我试图创作足够开放的作品，让人们能够赋予它自己的意义。

Certification standards are more than paperwork—they're our promise to the planet.