Matthew Henry and continuators on Proverbs 15:18

18 A wrathful man stirreth up strife: but he that is slow to anger appeaseth strife.

Here is, 1. Passion the great make-bate. Thence come wars and fightings. Anger strikes the fire which sets cities and churches into a flame: A wrathful man, with his peevish passionate reflections, stirs up strife, and sets people together by the ears; he gives occasion to others to quarrel, and takes the occasion that others give, though ever so trifling. When men carry their resentments too far, one quarrel still produces another. 2. Meekness the great peace-maker: He that is slow to anger not only prevents strife, that it be not kindled, but appeases it if it be already kindled, brings water to the flame, unites those again that have fallen out, and by gentle methods brings them to mutual concessions for peace-sake.