"Your goal as an investor should simply be to purchase, at a rational price, a part interest in an easily
understandable business whose earnings are virtually certain to be materially higher 5, 10, and 20
years from now. Over time, you will find only a few companies that meet these standards -- so when
you see one that qualifies, you should buy a meaningful amount of stock. You must also resist the
temptation to stray from your guidelines: If you aren't willing to own a stock for 10 years, don't even
think about owning it for 10 minutes. Put together a portfolio of companies whose aggregate earnings
march upward over the years, and so also will the portfolio's market value."
---Warren Buffett