To know oneself as well as one can; to avoid self-deception and foster no illusions; to learn what one can about the plain natural truth of things, and make one's valuations accordingly; to waste no time in speculating upon vain subtleties, upon "things which are not and work not"; - this perhaps is hardly the aim of an academic philosophy, but it is what a practical philosophy keeps steadily in view. Because the Meditations of Marcus Aurelius so consistently does keep just this in view, it still remains, and for those who can take it will probably always remain, the best of handbooks to the art of living.