to earth. By analyzing Kant's concept of pure appercep­ tion - the ancestor of all similar notions in the history of modern and contem­ porary idealism - the author concludes that certain functions and capacities attributed to pure apperception by Kant himself imply the rejection of the idealistic framework and the necessity to "naturalize" the idea of pure self. In other words - and Kant's claims to the contrary notwithstanding - pure ap­ perception cannot be conceived as superimposed upon man viewed as a part of nature, as a feeling and a sensing being. The referent, as it were, of the expres­ sion "pure self' turns out to be something much more familiar to us - a human organism, with all its needs, drives and dispositions.