The most important property of a program is whether it accomplishes the intention of its user.

你乐于挥霍的时间，不算浪费。

使变量可变很容易。控制恒定的持续时间是诀窍。

I cannot live without books.

Small habits, big changes.

I have noticed that youngsters given to the climbing habit usually do something when they grow up.

有时候不逼自己一把，你永远不知道自己有多优秀。