Your most unhappy customers are your greatest source of learning.

外交就是将你的敌人变成朋友，而不是将你的朋友变成敌人。

I'm rich enough to be able to afford to be honest.

The best designs emerge from a deep understanding of both theory and context.

译文：答应别人的话，千两黄金都不能更改。

And let's be clear: It's not enough just to limit ads for foods that aren't healthy. It's also going to be critical to increase marketing for foods that are healthy.