who was friedrich hayek and it's an honor to win this prize. >> it certainly is an honor, it certainly is profitable. >> society is more important than government. he wrote a great number of books. he taught at university of chicago for a while. he ended up in his hometown, not his hometown, dutch in germany, freiburg, which means free city which is perfect. he wasn't a conservative. he was a liberal, a libertarian. >> host: in your most recent book, "bourgeois equality: how ideas, not capital or institutions, enrichd the world" you talk about them as young hayek, middle-aged hike and old high-tech. did he change his opinion? >> guest: not too much. here's what happened. he was an economist economist. one of the leading economists in the world in the 1930s and 40s. he was commonly thought by everyone as john maynard keynes equal. but later in the '50s and 60s and 70s, he turned to philosophy, to political philosophy. i think that's the big change. it's not that he changed his opinions about what we unfortunately call capitalism. he thought it was a good thing. he thought that socialism