Meditations by Marcus Aurelius Book 3 Page 4

things which are but mere accessories and natural appendices as it were, there will scarce appear anything unto him, wherein he will not find matter of pleasure and delight. So will he behold with as much pleasure the true rictus of wild beasts, as those which by skilful painters and other artificers are imitated. So will he be able to perceive the proper ripeness and beauty of old age, whether in man or woman: and whatsoever else it is that is beautiful and alluring in whatsoever is, with chaste and continent eyes he will soon find out and discern.

Those and many other things will he discern, not credible unto every one, but unto them only who are truly and familiarly acquainted, both with nature itself, and all natural things.

III. Hippocrates having cured many sicknesses, fell sick