Wisdom: Anger is poisonous to wisdom

Anger is poisonous to the wisdom in man’s life. No matter
how wise one may be, when this quality enters him, its poison
works to prevent his wisdom from functioning, and wisdom falls
into a daze. In the same way that a man goes into a coma when
he drinks poison, anger is the poison which will make his wisdom
fall into a coma and prevent it from functioning.

Muhaiyaddeen, M.R. Bawa. The Golden Words of a Sufi Sheikh. Philadelphia:Fellowship Press, 1981,2006