Commander of the Faithful Imam Ali (MGB) said, “Men are of three types: intelligent, stupid and corrupt. For the intelligent, religion is his way; patience is his nature, and thinking is in his character. If questioned, he will respond. If he talks, he says the right words. If he listens, he perceives. If he speaks, he tells the truth. If someone trusts him, he will be loyal to him. However, if you direct a stupid person to the good, he will neglect it. If he is directed away from the good, he will follow. If he is guided towards ignorance, he becomes ignorant. If he talks, he lies. He doesn’t understand. Even if you try to make him understand, he will not understand. And a corrupt person is such that if you entrust him with something, he will cheat you. If you become his companion, he will debase you. And if you trust him in some affairs, he will not be sincere to you.”