The honestest Man alive, in keeping Company with Libertines, by degrees forgets the Maxims of Probity he before was used to, and naturally falls into those Vices with his Companions; and if he be so happy as to acquit himself, and to meet with better Company, then Virtue reassumes its first Lustre, and will triumph in its Turn, and he insensibly regains the Wisdom that he had abandoned.
In a Word, all the Alterations that we perceive in the Temper, Carriage, and Manners of most Men, have scarce any other Foundation, but the Force and Prevalency of Custom.
'Tis an Unhappiness in which the Men of this Age are fall'n, that Variety of Dishes is now the Fashion, and become so far preferable to Frugality; and yet the one is the Product of Temperance, whilst Pride and unrestrain'd Appetite is the Parent of the other.
Notwithstanding the Difference of their Origin, yet Prodigality is at present stiled Magnificence, Generosity and Grandeur, and is commonly esteem'd of in the World, whilst Frugality passes for Avarice and Sordidness in the Eyes and Acceptation of most Men: Here is a visible Error which Custom and Habit have established.
The Error has so far seduc'd us, that it has prevail'd upon us, to renounce a frugal Way of living, though taught us by Nature, even from the first Age of the World, as being that which would prolong our Days, and has cast us into those Excesses, which serve only to abridge the Number of them. We become old before we have been able to taste the Pleasures of being young; and the time which ought to be the Summer of our Lives, is often the beginning of their Winter, we soon perceive our Strength to fail, and Weakness to come on apace, and decline even before we come to Perfection.
On the contrary, Sobriety maintains us in the natural State wherein we ought to be. Our Youth is lasting, our Manhood attended with a Vigour that does not begin to decay 'till after a many Years. A whole Century must be run out before Wrinkles can be form'd on the Face, or Grey-hairs grow on the Head: This is so true, that when Men were not addicted to Voluptuousness, they had more Strength and Vivacity at Fourscore, than we have at present at Forty.
It cannot indeed be expected, that every Man should tie himself strictly to the Observations of the same Rules in his Diet, since the Variety of Climates, Constitution, Age, and other Circumstances may admit of Variations. But this we may assert as a reasonable, general, and undeniable Maxim, founded upon Reason and the Nature of Things; that for the Preservation of Health and prolonging a Man's Life, it is necessary that he eat and drink no more than is sufficient to support his natural Constitution; and on the contrary, whatsoever he eats and drinks beyond, that is superfluous, and tends to the feeding of the corrupt and vicious Humours, which will at last, though they may be stifled for a Time, break out into a Flame and burn the Man quite down, or else leave him like a ruinated or shattered Building.