Human Nature: Justice versus Power -- Noam Chomsky debates with Michel Foucault, 1971

also on youtube..

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Chomsky: Let me begin by referring to something that we have already discussed, that is, if it is correct, as I believe it is, that a fundamental element of human nature is the need for creative work, for creative inquiry, for free creation without the arbitrary limiting effect of coercive institutions, then, of course, it will follow that a decent society should maximise the possibilities for this fundamental human characteristic to be realised. That means trying to overcome the elements of repression and oppression and destruction and coercion that exist in any existing society, ours for example, as a historical residue.
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Foucault: And if one admits that, doesn't one risk defining this human nature which is at the same time ideal and real, and has been hidden and repressed until now - in terms borrowed from our society, from our civilisation, from our culture. .... The result is that you too realised, I think, that it is difficult to say exactly what human nature is.