As an Investor, you should be in all four Asset Classes

Robert Kiyosaki ‏: As an investor, you should be in all four asset classes, & you should be specializing in one or two This is true diversification.
Rich Dad Poor Dad is the story of Robert Kiyosaki's financial education. He had two 'dads' - one his real dad, who was poor, and the other, his best friend's dad, who was on his way to becoming a very rich man.