Evil company is always to be shunned; because it leads to lust and anger, illusion, forgetfulness of the goal, destruction of the will (lack of perseverance), and destruction of everything. (Narada Bhakti Sutra)
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.'
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.
Do you recall the story of the young Yogi in the Mahâbhârata who prided himself on his psychic powers by burning the bodies of a crow and crane by his intense will, produced by anger?
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.
It is not lust alone that one should be afraid of in the life of the world. There is also anger. Anger arises when obstacles are placed in the way of desire.
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.'