我为孩子们写作，因为我曾经是一个需要书籍的孩子。
"I write for kids because I was a kid who needed books."
最困难的是在当下富足地生活，而不让它被过去或未来玷污。
一个问题如果在计算机上可以快速解决，那么它属于P类问题；如果一个解可以快速验证，那么它属于NP类问题。
Our perception of reality is shaped by our expectations and past experiences.
The best leaders are those who empower others to lead.
这是真的：要欺骗一个诚实的人是很难的。
Every challenge is an opportunity in disguise—if you’re willing to look for it.
The best science is done with both the head and the heart.