The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when to be obeyed.
成为英雄的最大障碍是怀疑自己是否会证明自己是个傻瓜；真正的英雄主义是抵制这种怀疑；最深刻的智慧是知道何时应该抵制它，何时应该服从它。
The conversation about coal must move beyond 'pro' or 'anti'—we need solutions, not slogans.
除非你学会如何失败，否则你无法获胜。
A long habit of not thinking a thing wrong, gives it a superficial appearance of being right.
在科学中，最重要的不是获得新的事实，而是发现新的思考方式。
音乐是灵魂的语言，而灵魂是上帝的声音。
在以情动人前，你自己要先被打动。在你催人泪下前，你自己要热泪盈眶。在你以理服人前，你自己要坚信不疑。