One of the more important qualities an investor can have is patience. The stock market is volatile, and even great companies see their stock prices go through down periods. What's important, though, is the long-term value you receive.If you have an emergency fund saved and high-interest debt paid down, here are two stocks in which you should consider investing $1,500 each as part of a diversified portfolio. Each has had its fair share of problems but is built to return long-term value. Investing in these tw ...