present continually to your imagination Cato, Phocion, and Aristides, in whose presence the fools themselves will hide their faults, and make them controllers of all your intentions; should these deviate from virtue, your respect to those will set you right; they will keep you in this way to be contented with yourself; to borrow nothing of any other but yourself; to stay and fix your soul in certain and limited thoughts, wherein she may please herself, and having understood the true and real goods, which men the more enjoy the more they understand, to rest satisfied, without desire of prolongation of life or name.” This is the precept of the true and natural philosophy, not of a boasting and prating philosophy, such as that of the two former.