[14] [cap.3] But seeing that he is dumb with respect to learning and to all desirable and legitimate authority, he very naturally thinks of flight. For he is afraid that in addition to not being able to derive any advantage, he may even be injured. For all connections with the foolish injures us, and very often the soul against its will becomes stamped with the impression of their insanity of mind. And, in truth, instruction is naturally a thing inimical to ignorance, and so is industry to indifference.