A fool uttereth all his mind: But a wise man keepeth it in till afterwards.
A [self-confident] fool utters all his anger, but a wise man holds it back and stills it.
A fool uttereth all his anger; But a wise man keepeth it back and stilleth it.
Fools show all their anger, but the wise hold it back.
A foolish one offers everything on his mind. A wise one reserves and defers until later.