Happiness cannot come from hatred or anger. Nobody can say, 'Today I am happy because this morning I was angry.' On the contrary, people feel uneasy and sad and say, 'Today I am not very happy, because I lost my temper this morning.'
In the march towards Truth, anger, selfishness, hatred, etc., naturally give way, for otherwise Truth would be impossible to attain. A man who is swayed by passions may have good enough intentions, may be truthful in word, but he will never find the Truth.
God is the one goal of all our passions and emotions. If you want to be angry, be angry with Him. Chide your Beloved, chide your Friend. Whom else can you safely chide? Mortal man will not patiently put up with your anger; there will be a reaction. If you are angry with me I am sure quickly to react, because I cannot patiently put up with your anger. Say unto the Beloved, "Why do You not come to me; why do You leave me thus alone?" Where is there any enjoyment but in Him? What enjoyment can there be in little clods of earth?
If you strike a child, take care that you strike it in anger, even at the risk of maiming it for life. A blow in cold blood neither can nor should be forgiven.
Be advised; Heat not a furnace for your foe so hot That it do singe yourself: we may outrun, By violent swiftness, that which we run at, And lose by over-running. Know you not, The fire that mounts the liquor til run o'er, In seeming to augment it wastes it?
Somebody insults you and you feel anger. Don't miss this opportunity; try to understand why, why this anger. And don't make it a philosophical thing. Don't go to the library to consult about anger. Anger is happening to you -- it is an experience, a live experience. Focus your whole attention on it and try to understand why it is happening to you. It is not a philosophical problem. No Freud is to be consulted about it. There is no need! It is just foolish to consult somebody else while anger is happening to you. You can touch it. You can taste it. You will be burned by it.