Book Wisdom - From 1931

Audel's published a series of books in the early to mid twentieth century that were designed to educate tradesmen like electricians, air conditioning technicians and plumbers.  In a copy that I have titled, Audel's New Electric Library, dated 1931, this can be found just inside the cover:

How to Use This Book

Read For Profit

And then underneath some text the following:

"An hour with a book would have brought to your mind,

The secret that took the whole year to find;

The facts that you learned at enormous expense,

Were all on a library shelf to commence."

Just a little light wisdom to ponder...