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To feel much for others and little for ourselves； to restrain our selfishness and exercise our benevolent affections， constitute the perfection of human nature.

寫作的行為是一種發現的行為。

In computer science, we often have to deal with systems that are too complex to understand all at once.

時間是一條既向前流又向后流的河流。

使較弱的論點變得更強。

Sustainability is no longer optional—it's a business imperative.

我希望被人們記住為一個改變游戲規則的人。