The good man is invincible, for he does not enter the contest where he is not stronger. If you want to have his land and all that is on it, take the land; take his slaves, take his magisterial office, take his poor body. But you will not make his desire fail in that which it seeks, nor his aversion fall into that which he would avoid. The only contest into which he enters is that about things which are within the power of his will; how then will he not be invincible?
Some person having asked him what is Common sense, Epictetus replied: As that may be called a certain Common hearing which only distinguishes vocal sounds, and that which distinguishes musical sounds is not Common, but artificial; so there are certain things which men, who are not altogether perverted, see by the common notions which all possess. Such a constitution of the mind is named Common sense.
It is not easy to exhort weak young men; for neither is it easy to hold cheese with a hook. But those who have a good natural disposition, even if you try to turn them aside, cling still more to reason. Wherefore Rufus generally attempted to discourage, and he used this method as a test of those who had a good natural disposition and those who had not. "For," it was his habit to say, "as a stone, if you cast it upward, will be brought down to the earth by its own nature, so the man whose mind is naturally good, the more you repel him, the more he turns toward that to which he is naturally inclined."