Who does not know history's first law to be that an author must not dare to tell anything but the truth? And its second that he must make bold to tell the whole truth? That there must be no suggestion of partiality anywhere in his writings? Nor of malice?
That which leads us to the performance of duty by offering pleasure as its reward, is not virtue, but a deceptive copy and imitation of virtue.
[Lat., Nam quae voluptate, quasi mercede aliqua, ad officium impellitur, ea non est virtus sed fallax imitatio simulatioque virtutis.]
Enjoy the blessing of strength while you have it and do not bewail it when it is gone, unless, forsooth, you believe that youth must lament the loss of infancy, or early manhood the passing of youth. Life's race-course is fixed; Nature has only a single path and that path is run but once, and to each stage of existence has been allotted its own appropriate quality; so that the weakness of childhood, the impetuosity of youth, the seriousness of middle life, the maturity of old age.. each bears some of Nature's fruit, which must be garnered in its own season.