Authors:

The study of history is useful to the historian by teaching him his ignorance of women.

Benjamin Franklin, Ulysses S Grant, Andrew Carnegie, Henry Adams (2016). “Great American Lives: The Autobiography of Benjamin Franklin, Personal Memoirs of Ulysses S. Grant, Autobiography of Andrew Carnegie, and The Education of Henry Adams”, p.1577, Open Road Media
The study of history is useful to the historian by teaching him his ignorance of women.