你无法回到过去改变开头，但你可以从现在开始改变结局。
You can't go back and change the beginning, but you can start where you are and change the ending.
The way we see things is affected by what we know or what we believe.
我们总是希望在我们的程序中要说的是，所有已知语言都只能说得不好。
灾祸中依存着幸福，幸福中潜伏着灾祸
随着年龄增长，我越发意识到自己知之甚少。