The above Firing Line discussion on the upheaval of Keynesian economics seems apposite for the day. Jim Epstein and Nick Gillespie pay tribute to the famed economist behind it:
[Friedman’s] ultimate contribution to freedom and liberty is found less in any of the specific argument he made and more in the ways he made them. Friedman provided an all-too-rare example of a public intellectual who was scrupulously honest, forthright, and fair in every debate he entered. Whether he was duking it out with fellow Nobel Prize winners and other high-profile economists or making the case for the morality of capitalism with TV hosts such as Phil Donahue and angry students, he always argued in good faith, admitted when he was wrong, and enlarged the circle of debate.
Friedman's Open Mind interview is worth another look.