The Buddha

"Where is anger for one freed from anger,
Who is subdued and lives perfectly equanimous,
Who truly knowing is wholly freed,
Supremely tranquil and equipoised?
...He who repays an angry man in kind
Is worse than the angry man;
Who does not repay anger in kind,
He alone wins the battle hard to win.
He promotes the weal of both,
His own, as well as of the other.
Knowing that the other man is angry,
He mindfully maintains his peace
And endures the anger of both,
His own, as well as of the other,
Even if the people ignorant of true wisdom
Consider him a fool thereby."