The stock market has taken investors on a wild ride over the past several months, and after a massive sell-off, the markets are enjoying a sizable rally over the past three months. But what are the most sound investment principles regardless of the latest whims of Wall Street? What can you learn from previous market cycles? And is long-term investment the right way or the wrong way to proceed? We ask Bill O’Neill, chairman of Investor’s Business Daily and author of “How to Make Money in Stocks: A Winning System in Good Times and Bad”, now in its third edition.