text: Things are in such a kind of envelopment that they have seemed to philosophers, not a few nor those common philosophers, altogether unintelligible; nay even to the Stoics themselves they seem difficult to understand. And all our assent is changeable; for where is the man who never changes? Carry thy thoughts then to the objects themselves, and consider how short-lived they are and worthless, and that they may be in the possession of a filthy wretch or a whore or a robber. Then turn to the morals of those who live with thee, and it is hardly possible to endure even the most agreeable of them, to say nothing of a man being hardly able to endure himself. In such darkness then and dirt and in so constant a flux both of substance and of time, and of motion and of things moved, what there is worth being highly prized or even an object of serious pursuit, I cannot imagine. But on the contrary it is a man's duty to comfort himself, and to wait for the