25. These are great reliefs to nature, as they qualify her for struggling with hunger and thirst, whenever any distemper or duty of life may put her upon such difficulties; and at the same time give her an opportunity of extricating herself from her oppressions, and recovering the several tones and springs of her distended vessels. Besides that, abstinence well-timed often kills a sickness in embryo, and destroys the first seeds of an indisposition.
26. It is observed by two or three ancient authors, that Socrates, notwithstanding he lived in Athens during that great plague, which has made so much noise through all ages, and has been celebrated at different times by such eminent hands; I say, notwithstanding that he lived in the time of this devouring pestilence, he never caught the least infection, which those writers unanimously ascribe to that uninterrupted temperance which he always observed.
27. And here I cannot but mention an observation which I have often made, upon reading the lives of the philosophers, and comparing them with any series of kings or great men of the same number. If we consider these ancient sages, a great part of whose philosophy consisted in a temperate and abstemious course of life, one would think the life of a philosopher and the life of a man were of two different dates. For we find that the generality of these wise men were nearer an hundred than sixty years of age at the time of their respective deaths.
28. But the most remarkable instance of the efficacy of temperance towards the procuring of long life, is what we meet with in a little book published by Lewis Cornaro, the Venetian; which I the rather mention, because it is of undoubted credit, as the late Venetian ambassador, who was of the same family, attested more than once in conversation, when he resided in England. Cornaro, who was the author of the little treatise I am mentioning, was of an infirm constitution, till about forty, when, by obstinately persisting in an exact course of temperance, he recovered a perfect state of health; insomuch that at fourscore he published his book, which has been translated into English, under the title of, Sure and certain methods of attaining a long and healthy Life.
29. He lived to give a third or fourth edition of it, and after having passed his hundredth year, died without pain or agony, and like one who falls asleep. The treatise I mention has been taken notice of by several eminent authors, and is written with such a spirit of cheerfulness, religion and good sense, as are the natural concomitants of temperance and sobriety. The mixture of the old man in it is rather a recommendation than a discredit to it.
The Duty of Secrecy.
1. It is related by Quintus Curtius, that the Persians always conceived a lasting and invincible contempt of a man who had violated the laws of secrecy: for they thought that, however he might be deficient in the qualities requisite to actual excellence, the negative virtues at least were always in his power, and though he perhaps could not speak well if he was to try, it was still easy for him not to speak.
2. In this opinion of the easiness of secrecy, they seem to have considered it as opposed, not to treachery, but loquacity, and to have conceived the man, whom they thus censured, not frighted by menaces to reveal, or bribed by promises to betray, but incited by the mere pleasure of talking, or some other motive equally trivial, to lay open his heart with reflection, and to let whatever he knew slip from him, only for want of power to retain it.
3. Whether, by their settled and avowed scorn of thoughtless talkers, the Persians were able to diffuse to any great extent, the virtue of taciturnity, we are hindered by the distress of those times from being able to discover, there being very few memoirs remaining of the court of Persepolis, nor any distinct accounts handed down to us of their office-clerks, their ladies of the bed-chamber, their attornies, their chamber-maids, or the foot-men.