Sustainability is not an option; it's a responsibility we owe to future generations.

"Reading is not optional."

"I think the first duty of a writer is to entertain."

I never really thought about being a director. I just wanted to be an actor.

Quality is not a chance; it is a choice.

记录程序的最好方法是记录它。

科学的目标一方面是尽可能全面地理解感觉经验之间的联系，另一方面是通过使用最少的基本概念和关系来实现这一目标。