First ofall there is the main doctrinal adversary, Keynes, the common enemy,· which ensures that criticism of Keynes will pass back and Iorth between these two neo-liberalisms. Second, they share the same objects of repulsion, namely, the stateconfrolled economy,plamiing, and state·interventionism on precisely those overall quantities to which Keynes -attached such theoretical and especially practical importance. Finally, a series of persons, theories, and books pass between -these two forms of neo-liberalism, the main ones referring -to ·the Austrian-school -broadly speaking, to Austrian neomarginalism, at any ,rate to those who came from there; like von Mises, Hayek, and so on.

Michel Foucault, The Birth of Biopolitics, loc. 527