To seek to extinguish anger utterly is but a bravery of the Stoics. We have better oracles: 'Be angry, but sin not.' 'Let not the sun go down upon your wrath.'
The devil comes in many guises-anger in the form of justice-passion in the form of duty. When it first comes, the man knows and then he forgets. Just as your pleaders' conscience; at first they know it is all Badmashi (roguery), then it is duty to their clients; at last they get hardened.
To be angry is to yield to the influence of Satan. No one can make us angry. It is our choice. If we desire to have a proper spirit with us at all times, we must choose to refrain from becoming angry. I testify that such is possible.