If you’re considering a stock on the strength of some specific product that a company makes, the first thing to find out is: What effect will the suc… - Peter Lynch

This taught me not only that it’s difficult to predict markets, but also that small investors tend to be pessimistic and optimistic at precisely the wrong times, so it’s self-defeating to try to invest in good markets and get out of bad ones.

Actually Wall Street thinks just as the Greeks did. The early Greeks used to sit around for days and debate how many teeth a horse has. They thought they could figure it out by just sitting there, instead of checking the horse. A lot of investors sit around and debate whether a stock is going up, as if the financial muse will give them the answer, instead of checking the company.

If you can’t convince yourself “When I’m down 25 percent, I’m a buyer” and banish forever the fatal thought “When I’m down 25 percent, I’m a seller,” then you’ll never make a decent profit in stocks.