It all started on a napkin.
Before the firm, the book, and the calculators, there were napkins — the way I'd explain money to you across a table. Thirty-one of them. Most are about money. Some are about the mind that manages it. A few are about life, which is the point of both.
31 napkins · no jargon · no suitsDo this
Want the math behind the napkins?
Every napkin has a number underneath it. The tools do the arithmetic; the Da Vinci Index tells you where to start.