Commander of the Faithful (ʿas) said, "Ten bring trials to themselves and to others: the one with little learning who takes it upon himself to teach a great deal to others. The prudent man possessing knowledge but not intellect. The one who seeks something he cannot attain and which is not suitable for him. The one fatigued but lacks steadiness. The steady one who, despite his steadiness, lacks knowledge. The knowledgeable one who does not desire improvement. The one who desires improvement but lacks knowledge. The knowledgeable one who loves the world. The one merciful with people but miserly with his possessions. The one seeking knowledge but disputing with those more knowledgeable than him in it such that whenever they teach him, he does not accept it from them."