Imam Sadiq (a.s) said: “There are some servants of God who are eloquent, wise and knowledgeable but their hearts are filled with the fear of God and have stopped talking. They compete with each other in doing good deeds to approach God. They do not overestimate their deeds, and do not get pleased with the small amount of good deeds that they perform. Although they are intelligent and good people, they consider themselves to be wicked people.”