Dr. A. addresses several issues:

*Becoming an old man

In the very first chapter he quotes the immortal lines

In the spring, a young man's fancy lightly turns to thoughts of what
The older man, throughout the year, has never even once forgot.

*At what age can one become a dirty old man?
*Use your eyes!
*At whom to leer

With its discussion of mammamobilism (also known as "nipple shock").

Oh, it is a veritable font of wisdom, but I am unsurprised that it has remained Known But To A Few. Librarians keep TRUE wisdom for themselves.