text: Epicurus says, In my sickness my conversation was not about my bodily sufferings, nor, says he, did I talk on such subjects to those who visited me; but I continued to discourse on the nature of things as before, keeping to this main point, how the mind, while participating in such movements as go on in the poor flesh, shall be free from perturbations and maintain its proper good. Nor did I, he says, give the physicians an opportunity of putting on solemn looks, as if they were doing something great, but my life went on well and happily. Do, then, the same that he did both in sickness, if thou art sick, and in any other circumstances; for never to desert philosophy in any events that may befall us, nor to hold trifling talk either with an ignorant man or with one unacquainted with nature, is a principle of all schools of philosophy; but to be intent only on that which thou art now doing and on the instrument by which thou doest it.