The hard core in public choice can be summarized in three presuppositions: (1) methodological individualism, (2) rational choice, and (3) politics-as… - James M. Buchanan

Economics is the study of the whole system of exchange relationships. Politics is the study of the whole system of coercive or potentially coercive relationships.

Individuals do not act so as to maximize utilities described in independently-existing functions. They confront genuine choices, and the sequence of decisions taken may be conceptualized, ex post (after the choices), in terms of “as if” functions that are maximized. But these “as if” functions are, themselves, generated in the choosing process, not separately from such process. If viewed in this perspective, there is no means by which even the most idealized omniscient designer could duplicate the results of voluntary interchange. The potential participants do not know until they enter the process what their own choices will be. From this it follows that it is logically impossible for an omniscient designer to know, unless, of course, we are to preclude individual freedom of will.

I did not call him "Fritz." To me he remained always "Professor Hayek," despite his own graciousness in treating me as a peer. I shall not attempt to evaluate Professor Hayek's monumental contribution to our understanding of the events of this turbulent century, to the influence of his ideas on these events themselves or even to the development of economic theory in a strictly scientific sense.