The past is always tense, the future perfect.

一本书是一个花园，一个果园，一个仓库，一场聚会，一路上的伙伴，一位顾问，众多的顾问。

编程语言中最重要的东西是语义，而不是语法。

I have to be alone very often. I'd be quite happy if I spent from Saturday night until Monday morning alone in my apartment. That's how I refuel.

我们不必如此努力。

Every challenge is an opportunity in disguise.