变革在开始时最难，在中间最混乱，在结束时最好。
Change is hardest at the beginning, messiest in the middle, and best at the end.
历史是我们再也听不到的声音的回响。
我们常常认为幸福是得到我们想要的，但它更多的是关于珍惜我们已有的。
Faith is the great cop-out, the great excuse to evade the need to think and evaluate evidence.
Prime numbers are what is left when you have taken all the patterns away. I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them.