你唯一应该努力超越的人就是昨天的自己。
The only person you should try to be better than is the person you were yesterday.
Every book is a journey, and every journey is a book.
Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.
Brand is just a perception, and perception will match reality over time.
经济学的第一课是稀缺：从来没有足够的任何一种东西能够满足所有人对其需要。政治学的第一课是摒弃经济学的第一课。
Think wrongly, if you please, but in all cases think for yourself.
译文：少年不知道早起勤奋学习，到老了后悔读书少就太迟了。赏析：人在年轻时，精力旺盛，正是勤奋读书，努力奋斗的时候。
要想改变世界需先改变他自己。