When he looked into her dark eyes, and saw that her lips were poised between a laugh and silence, he learned the most important part of the language that all the world spoke—the language that everyone on earth was capable of understanding in their heart. It was love.

True leadership means making tough decisions today for a better tomorrow.

I don't think that you have any insight whatsoever into your capacity for good until you have some well-developed insight into your capacity for evil.

除非不再尝试，否则就没有失败。

所有科学的起源是对原因的求知欲，而所有伪科学的起源是宁愿接受虚假原因也不愿承认无知的欲望。