And in the treasures of speech there are treasures of argument in confronting the opponent, who is the one who does not know God with the knowledge of taste, and they are the possessors of rational evidence, for they do not accept what the laws brought of the attributes of truth, which if someone other than the Prophet had said, the rational people would have been ignorant of their evidence, and the believers would have disbelieved, and he is what he said other than what was said to him. So when? Unless knowledge is a taste, it will not rid the mind of its listener of denial in his heart in terms of his mind .