When you're done talking, stop

Choice quotes from Shaun FitzPatrick, Major USMC.

By the way toughest interviews I ever did were on NPR, not because of harsh treatment or anything like that, but because the radio reporter asks you to describe in detail for listeners who can't see what you're talking about. It's tougher than I thought it would be.

and Sales people and buyers:

Clients are uncomfortable with the quiet and want to fill the air. We always said, "Whoever talks first loses" but it isn't quite as simple as that. People will tell you things (if you just shut up!) when given the chance. Silence is the best way to handle it.