This weekend I came across commentary in the Wall Street Journal’s Breakingviews about the merits of breaking up Microsoft (NASDAQ: MSFT). I don’t agree with that proposition but that’s a topic of discussion for another time. The article also talked about Google and compared its valuation to that of Microsoft’s at the same point in the companies’ lifecycles. Indeed, Google’s shares are pricier than Microsoft’s were in their early days. The conclusion was that an investor buying into Google shares would not see the same upside as an investor that had bought into Microsoft shortly after its IPO.

However, in my opinion, those are conservative assumptions. Google has only begun to scratch the surface of its vast potential. As an example, think about the possibilities as broadband proliferates and video becomes a killer app on the net. Google will be a key player as our living rooms are digitized and we become perpetually connected through our wireless gizmos. It’s not just search and advertising. The company has proven its unbelievable potential by creating Google Earth and Google Desktop and other so-called ‘web services’ offerings are sure to follow.

What does Fisher have to do with Google? He had a fantastic track record of identifying growth stocks. One piece of advice he gives is that an investor should never assume that because a stock is trading at a high P/E multiple, that all the future growth is already discounted by the lofty valuation. In other words, do not underestimate the earnings power of what could be the next ultimate growth stock. This is what I see in Google and by now the stock has already appreciated more than four-fold since the IPO. The road may be bumpy and competition is heating up, but my back of the envelope calculations tell me the stock will appreciate by another 50% over the next five years. Any major decline in the stock should be used as an opportunity to snap up shares.