The supersession of private property is therefore the complete emancipation of all human senses and attributes; but it is this emancipation precisely
because these senses and attributes have become human, subjectively as
well as objectively. The eye has become a human eye, just as its object has
become a social, human object, made by man for man. The senses have
therefore become theoreticians in their immediate praxis. They relate to the
thing for its own sake, but the thing itself is an objective human relation to
itself and to man, and vice-versa.
— Marx, Economic and Philosophic Manuscripts, p. 35 (via marxandsparks)