And here is why. 

So after 28 years, it’s time to move on.

In my new job, I
want to dig into the meaning of the words “liberty” and “limited
government.” For many years, through Republican and Democratic
administrations, we have been losing something vital in America: the
commitment to individual liberty and the understanding that as
government grows, liberty shrinks.

Fox offers me more airtime and a new challenge. I’m still
thinking about what I will do with my own show. Economic analyses of
the latest screwball ideas in Washington — certainly. I also want to
undertake exercises in understanding libertarianism, the philosophy of
freedom, which used to be called “liberalism.”