Always consider your intellect to be lacking; otherwise too much faith in it surely leads to error.
Ali ibn Abi TalibThere is no capital more useful than intellect and wisdom, and there is no indigence more injurious than ignorance and unawareness.
Ali ibn Abi TalibBody is purified by water. Ego by tears. Intellect is purified by knowledge. And soul is purified with love.
Ali ibn Abi TalibGreed takes a person to the watering place but gets him back without letting him drink. It undertakes responsibility but does not fulfill it. Often the drinker gets choked before quenching 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 would reach him who does not approach it.
Ali ibn Abi Talib