English to Latin Art/Literary

This translation is for a tattoo. The client wants it to say something closer to "anger is a gift, used wisely". Here is what he had to say: "Anger is a gift" is a quote from Rage Against the Machine. It basically means that anger is better than fear, cowardice, depression. It means that one should fight back when oppressed, and that we should not be manipulated by those around us.