The source of a "Bite" -- mentioned in each listing -- should be acknowledged.     In print, definitely.   In a formal speech, yes.   In informal remarks, use your judgment.

When the source lends credibility, it strengthens your soundbite.

In brief comments -- such as very short media interviews -- use your judgment.

Many metaphors have circulated so widely, evolving along the way, that it's hard to know who coined them first. We've tried.