"For avoiding slavery to the belly or to sleep and incontinence, is there, think you, any more effective specific than the possession of other and greater pleasures, which are delightful not only to enjoy, but also because they arouse hopes of lasting benefit? ... Do you think then that out of all this thinking there comes anything so pleasant as the thought: ‘I am growing in goodness and I am making better friends'? And that, I may say, is my constant thought."