Aurelius, Meditations §aur_07_xxxv: What pain soever thou art in, let this presently come to thy mind, that it is...

What pain soever thou art in, let this presently come to thy mind, that it is not a thing whereof thou needest to be ashamed, neither is it a thing whereby thy understanding, that hath the government of all, can be made worse. For neither in regard of the substance of it, nor in regard of the end of it (which is, to intend the common good) can it alter and corrupt it. This also of Epicurus mayst thou in most pains find some help of, that it is 'neither intolerable, nor eternal;' so thou keep thyself to the true bounds and limits of reason and give not way to opinion. This also thou must consider, that many things there be, which oftentimes unsensibly trouble and vex thee, as not armed against them with patience, because they go not ordinarily under the name of pains, which in very deed are of the same nature as pain; as to slumber unquietly, to suffer heat, to want appetite: when therefore any of these things make thee discontented, check thyself with these words: Now hath pain given thee the foil; thy courage hath failed thee.