译文：不要掩盖别人的优点，不要随便议论别人的缺点。

There is no scarcity of opportunity to make a living at what you love; there's only scarcity of resolve to make it happen.

书籍是灵魂的镜子。

The key is to set realistic customer expectations, and then not to just meet them, but to exceed them — preferably in unexpected and helpful ways.