Jeremy Siegel's Latest Book Lays out the Future for Investors

Siegel found that historically the biggest factor in productivity growth has been advances in communication -- writing, the printing press, telegraph and telephone, and the Internet.

From 1925 through the end of 2003, tobacco company Philip Morris, now called Altria Group, delivered a 17% average annual return, assuming all dividends were reinvested in the company's shares.

A $4,000 investment in the top four would have grown to $6.29 million, versus $1.11 million for a similar investment in the stock market as a whole.