Limited government whose sole purpose is to protect our rights is government that fosters economic growth and opportunity.

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Today, many people think that Greece should leave the eurozone and introduce a new currency, whose sole purpose is apparently to be devalued.

FORBES: Ask Greek Citizens About Soft (Drachma) Money, And If They Like It

In addition to single strategy hedge funds that may invest in Japanese equities or high-yield bonds of technology stocks, there are even funds whose sole purpose is to invest in other funds.

FORBES: The Simple Truth about Hedge Funds

And so we're being treated to the absurdity of conservative activist groups such as Americans for Prosperity -- whose sole purpose is to argue for cuts in government spending -- complaining about the practical effects of those very cuts on which they insisted.

CNN: Do Muslims really hate terrorism?

These days he runs against ever-dwindling fields -- on this occasion just three rivals went to the start, and that included stable companion Bullet Train, whose sole purpose in life is to give Frankel a flying start in his races then humbly fade into obscurity in the final furlongs.

CNN: STORY HIGHLIGHTS

Yes, January has been mostly a tough month as the year-old victory against the massive content lobby gives way to the reality that we face a huge well-funded army of lobbyists whose sole purpose is to convince Congress that the interests of the massive content companies are more important than the interests of artists, musicians, innovators and ordinary people.

FORBES: It's Time for a Fresh Look at Copyright Laws