Murray Miles

Against those commentators who consider Kant’s explicit reference to Copernicus’s heliocentric reversal either grossly misleading or simply irrelevant to the revolution in philosophy carried out in the Critique of Pure Reason, it is argued in this paper that Kant’s transcendental idealist inversion of the familiar standpoint of realism and sound common sense fully justifies the talk of a ‘Copernican revolution,’ even if Kant himself never used the expression. It is not just the dominant ‘moving spectator’ motif (or transcendental turn) of the Preface that has to do with Copernicus; both the immediately following ‘crucial experiment’ motif (on the distinction between appearances and things in themselves) and the ‘critical’ motif (regarding self-knowledge and the possibility of synthetic a priori judgments) confirm the aptness of the Copernican analogy. Still, some commentators have stretched the analogy too far; the final section of the paper attempts to determine just how far it may reasonably be said to go.

In 1772, Kant outlined the new problem of his critical period in terms of four possible “ways” of understanding the agreement of knowledge with its object. This study expands Kant’s terse descriptions of these ways, examining why he rejected them. Apart from clarifying the historical context in which Kant saw his own achievement (the Fifth Way), the chief benefits of exploring the historical background of Way Two, in particular, are that it (1) explains the puzzling intuitus originarius/intellectus archetypus dichotomy, and (2) casts doubt on the received idea that Kant broke with the traditional theocentric model of cognition.