Don't be afraid to give up the good to go for the great.
You must have the eyes of an abyss to gaze into the abyss.
The secret of being miserable is to have leisure to bother about whether you are happy or not.
The best way to predict the future is to invent it.
有成就感的人会把世界看成一个友好的世界,并乐于看到它照原样保持下去,但失意者却会乐于看到世界急遽改变。
The mining industry must evolve or become obsolete—there's no middle ground.