A proof is a device for convincing someone else that a mathematical statement is true.

Competitive strategy is about being different. It means deliberately choosing a different set of activities to deliver a unique mix of value.

我相信一见钟情，因为我是一个音乐人。

我不完美，但我永远是我自己。

如果你感到痛苦，那是因为你在成长。

The divine right of husbands, like the divine right of kings, may, it is hoped, in this enlightened age, be contested without danger.