I think we all ought to be careful about too much generalization on this issue, even as I confess to painting with a pretty broad brush myself!
John C. BogleThe returns we read about in the industry sales literature vastly diminish when we move from the theoretical world of market indexes to the real world of actually investing.
John C. BogleThe historical data support one conclusion with unusual force: To invest with success, you must be a long-term investor.
John C. Bogle