the best part of it all was his concept of Mr. Market. Instead of thinking the market was efficient, Graham treated it as a manic depressive who comes by every day. And some days Mr. Market says, “I’ll sell you some of my interest for way less than you think it’s worth.” And other days, he comes by and says, “I’ll buy your interest at a price that’s way higher than you think it’s worth.” And you get the option of deciding whether you want to buy more, sell part of what you already have, or do nothing at all.

