[The Buddha:]
"Having killed anger you sleep in ease. Having killed anger you do not grieve. The noble ones praise the slaying of anger — with its honeyed crest & poison root — for having killed it you do not grieve."
— SN 1.71
[The Buddha:]
Whence is there anger for one free from anger, tamed, living in tune — one released through right knowing, calmed & Such. You make things worse when you flare up at someone who's angry. Whoever doesn't flare up at someone who's angry wins a battle hard to win. You live for the good of both — your own, the other's — when, knowing the other's provoked, you mindfully grow calm. When you work the cure of both — your own, the other's — those who think you a fool know nothing of Dhamma.
— SN 7.2