Benjamin Graham on "Mr. Market"

Imagine that in some private business you own a small share that cost you a thousand dollars.  One of your partners, who's named Mr. Market, is very obliging indeed.  Every day he tells you what he thinks your interest is worth and furthermore either offers to buy you out or sell to you an additional interest on that basis.  Sometimes his idea of value seems plausible and justified by business developments and prospects, as you know them.  Often, on the other hand, Mr. Market lets his enthusiasm or his fears run away with him, and the value he proposes seems to you a little short of silly. 

~ Benjamin Graham, The Intelligent Investor (1949)

(As quoted by Dan Ferris, "The Secret to Beating Mr. Market': A Lesson in Value Investing," Stansberry Investor Hour, 6:40 mark, April 10, 2023)