From the pen of Benjamin Franklin in 1745 comes a once-scandalous letter to an unnamed recipient (very possibly fictitious but rumoured to be Cadwallader Colden) in which he begins by suggesting marriage as the best remedy for the young man's sexual urges. In the event of marriage being out of the question for his friend however, Franklin then goes on to write an eight-strong list detailing the advantages of an older mistress which, due to its "obscene" nature, resulted in its being omitted from published collections of his writings during the 19th Century.
5. Because in every Animal that walks upright, the Deficiency of the Fluids that fill the Muscles appears first in the highest Part: The Face first grows lank and wrinkled; then the Neck; then the Breast and Arms; the lower Parts continuing to the last as plump as ever: So that covering all above with a Basket, and regarding only what is below the Girdle, it is impossible of two Women to know an old from a young one. And as in the dark all Cats are grey, the Pleasure of corporal Enjoyment with an old Woman is at least equal, and frequently superior, every Knack being by Practice capable of Improvement.
8. They are so grateful!!
Thus much for my Paradox. But still I advise you to marry directly; being sincerely
Your affectionate Friend,
B. Franklin