Anything can happen in stock markets and you ought to conduct your affairs so that if the most extraordinary events happen, that you're still around to play the next day.
Warren BuffettTime is the friend of the wonderful business. It's the enemy of the lousy business. If you're in a lousy business for a long time, you're going to get a lousy result, even if you buy it cheap. If you're in a wonderful business for a long time, even if you pay a little too much going in, you're going to get a wonderful result if you stay in a long time.
Warren Buffett