48. Think continually how many physicians are dead after often

contracting their eyebrows over the sick; and how many astrologers after predicting with great pretensions the deaths of others; and how many philosophers after endless discourses on death or immortality; how many heroes after killing thousands; and how many tyrants who have used their power over men's lives with terrible insolence, as if they were immortal; and how many cities are entirely dead, so to speak, Helice[A] and Pompeii and Herculaneum, and others innumerable. Add to the reckoning all whom thou hast known, one after another. One man after burying another has been laid out dead, and another buries him; and all this in a short time. To conclude, always observe how ephemeral and worthless human things are, and what was yesterday a little mucus, to-morrow will be a mummy or ashes. Pass then through this little space of time conformably to nature, and end thy journey in content, as an olive falls off when it is ripe, blessing nature who produced it, and thanking the tree on which it grew.

[A] Ovid, Met. xv. 293:—

"Si quaeras Helicen et Burin Achaidas urbes, Invenies sub aquis."