"You assume I can suffer from 'uncontrollable anger'. Unlike most mortals, I have sufficient self-control to maintain my calm, even under life-threatening circumstances. Even after being captured by the slavers, I did not lose my temper. And, as you are quite aware when you purchased my freedom, my value is in research and crafting, not combat. I am certain the others are aware of the work I do, and, if they are not, then they are unlikely to care."