Sayings by Imam Ali (a)
More wonderful than man himself is that part of his body which is connected with his trunk with muscles. It is his brain (mind). Look what good and bad tendencies arise from it. On the one hand it holds treasures of know- ledge and wisdom and on the other it is found to harbour very ugly desires. If a man sees even a tiny gleam of success, then greed forces him to humiliate himself. If he gives way to avarice, then inordinate desires ruin him, if he is disappointed, then despondency almost kills him. If he is excited, then he loses temper and gets angry. If he is pleased, then he gives up precaution. Sudden fear makes him dull and nervous, and he is unable to think and find a way out of the situation. During the times of peace and prosperity he becomes careless and unmindful of the future. If he acquires wealth, then he becomes haughty and arrogant. If he is plunged in distress, then his agitation, impatience and nervousness disgrace him. If he is overtaken by poverty, then he finds himself in a very sad plight, hunger makes him weak, and over-feeding harms him equally. In short every kind of loss and gain makes his mind unbalanced.