Let me add some quotes by Peter Lynch
"Fortunes change, there is no assurance that major companies won’t become minor, and there is no such thing as a can’t-miss blue chip."
"It takes remarkable patience to hold on to a stock in a company that excites you, but which everybody else seems to ignore. You begin to think everybody else is right and you are wrong. But where fundamentals are promising, patience is rewarded."
"There is no shame in losing money on a stock. Everybody does it. What is shameful is to hold on to a stock or worse to buy more of it when the fundamentals are deteriorating."
“As I look back on it now, it’s obvious that studying history and philosophy was much better preparation for the stock market than, say, studying statistics. Investing in stocks is an art, not a science, and people who’ve been trained to rigidly quantify everything have a big disadvantage. If stockpicking could be quantified, you could rent time on the nearest Cray computer and make a fortune. But it doesn’t work that way. All the math you need in the stock market you get in the fourth grade.”
"Go for a business that any idiot can run - because sooner or later, any idiot probably is going to run it."
"Although its easy to forget sometimes, a share is not a lottery ticket. It's a part ownership of a business."
"Thousands of experts study overbought indicators, oversold indicators, head-and-shoulder patterns, put-call ratios, the Fed’s policy on money supply, foreign investment, the movement of the constellations through the heavens, and the moss on oak trees, and they can’t predict markets with any useful consistency, any more than the gizzard squeezers could tell the Roman emperors when the Huns would attack.”