F. Scott Fitzgerald

You have a good many little gifts and virtues, but there is no need of parading them, for conceit spoils the finest genius. There is not much danger that real talent or goodness will be overlooked long, and the great charm of all power is modesty.

Whenever somebody folds, say, 'Good laydown.' It encourages them to fold on a later hand because it makes them feel like you had the best hand even if you were bluffing. It's an odd form of flattery that seems to work at the poker table.