Nahj al-Balagha (Peak of Eloquence)

275. Amīr al-mu’minīn, peace be upon him, said: Greed takes a person to the watering place but gets him back without letting him drink. It undertakes responsibility but does not fulfil it. Often the drinker gets choked before the quenching of his thirst. The greater the worth of a thing yearned for the greater is the grief for its loss. Desires blind the eyes of understanding. The destined share will reach him who does not approach it.