[M]an knows his own nature, and that which he pursues must surely be his satisfaction? Judging by which measure I determine that the best thing in the world is flying at full speed from pursuit, and keeping up hammer and thud and gasp and bleeding till the knees fail and the head grows dizzy, and at last we all fall down and that thing (whatever it is) which pursues us catches us up and eats our carcasses. This way of managing our lives, I think, must be the best thing in the world-for nearly all men choose to live thus.