“I and the public know / What all schoolchildren learn, / Those to whom evil is done / Do evil in return.” – W.H. Auden, poet (21 Feb 1907-1973)

It might be better phrased that it’s best to act and do honorably by even your enemies.  It’s only love that can turn hate to love.  Hate can never turn hate to love.  As I was telling my eldest daughter the other day, love is the only real and best magic in the world.  Hate and evil only bring more hate and evil.  Best to always do good.