Authors:

There is a genius on one side of every trade and a dolt on the other, but which is which does not become clear until much later.

Leon Levy, Eugene Linden (2009). “The Mind of Wall Street: A Legendary Financier on the Perils of Greed and the Mysteries of the Market”, p.8, PublicAffairs
There is a genius on one side of every trade and a dolt on the other, but which is which does not become clear until much later.