Who said the common man is a fool?

The phrase "the common man is a fool" is often associated with the writings of various authors and thinkers, but it is most famously attributed to the American writer and satirist H.L. Mencken. Mencken was known for his critical and sometimes cynical views on democracy and the general populace. He believed that the average person often lacked the insight and knowledge necessary to make informed decisions, which he expressed through his sharp wit and commentary on society.