发现的喜悦无疑是人类心灵所能感受到的最活跃的体验。
卓越不是一种行为,而是一种习惯。
没有比一个除了优柔寡断之外没有任何习惯的人更悲惨的了。
Never underestimate the power of the human spirit. It can overcome the most impossible odds.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.