Smart people learn from their mistakes. Smarter people learn from other people’s mistakes. The smartest people learn from smart people’s mistakes. And the smartest people are the smartest people because they have learned from the most mistakes. Instead of letting jealousy and competitiveness exclude; invite and recruit those more intelligent, skillful, and wise. If not in service, at least as friends they can protect from the dangers of ignorance, untangle complicated difficulties, distill the wisdom of the best books, and—with little effort on your part—confer the fame of an oracle. As many sages speak through your mouth as were consulted beforehand.