That's Warren Buffet main investing principle, and he's the most successful investor that ever was. But also follow Thomas Jefferson's advice never to buy something just because it's on sale. Combine the guiding principles of these two greats, and you have yourself a solid investing mantra:
Buy Quality Investments When They're Super Cheap.
So is it the time to buy stock in Apple (APPL)? I would definitely call Apple a quality investment, but take a look at its stock price these last 10 years and it's not exactly what I would call discounted. If you want to be a Buffeteer, now's not the time to buy Apple, especially when there are other great deals on the market.
