The paradox of effective speaking is that when you focus on the information needs of your audience, your needs for recognition and respect are fulfilled.

However, when you focus on your own needs to tell them everything you know, regardless of their interest, their willingness to listen and respect you as an expert is damaged by–well, too much talking about what’s in your head, and not enough talking about what’s in theirs.

They therefore think less of you. Thus, paradoxically, when you focus on your own needs, you damage your audience and yourself.