数学不是沿着一条清理得很好的高速公路小心行进，而是进入一个陌生的荒野的旅程，探险者常常会迷路。
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
他会喃喃自语：“我的花就在星河的某个角落……”可是，这花一旦被羊吃掉了，一瞬间，所有星星都将随之黯淡无光……那你也认为这不重要吗？
Don't let fear write your story.
The future depends on what you do today.
Happiness is not about having more, but caring less.
"It is a capital mistake to theorize before one has data."
学得越多，就越意识到自己知道的有多少。