It's human nature to find patterns where there are none and to find skill where luck is a more likely explanation (particularly if you're the lucky manager).
William J. BernsteinAll the things that make us human make us terrible investors and you have to understand what they are and how to avoid them.
William J. BernsteinWall Street is littered with the bones of those who knew just what to do, but could not bring themselves to do it.
William J. Bernstein