text: All the actions of life, taken as a whole, are controlled by the consideration of what is honourable or base; it is with reference to these two things that our reason is governed in doing or not doing a particular thing. I shall explain what I mean: A good man will do what he thinks it will be honourable for him to do, even if it involves toil; he will do it even if it involves harm to him; he will do it even if it involves peril; again, he will not do that which will be base, even if it brings him money, or pleasure, or power. Nothing will deter him from that which is honourable, and nothing will tempt him into baseness. Therefore, if he is determined invariably to follow that which is honourable, invariably to avoid baseness, and in every act of his life to have regard for these two things, deeming nothing else good except that which is honourable, and nothing else bad except that which is base; if virtue alone is unperverted in him and by itself keeps its even course, then virtue is that man's only good, and nothing can thenceforth happen to it which may make it anything else than good. It has escaped all risk of change; folly may creep upwards towards wisdom, but wisdom never slips back into folly.