Abstract

IT IS fairly well known that the problem of motion or, more generally, that of change is one of the oldest philosophical problems which can be traced to the very dawn of Western thought. It was inseparable from the basic problem which the Presocratics faced: that of the primary stuff underlying the phenomenal diversity of our sensory experience. Once the sensory diversity is viewed as merely apparent, one cannot avoid the question how such an appearance is generated by the underlying single principle; in other words, one faces the problem of the origin of things, i.e., the problem of change. Hence the monism which in various forms underlies the majority of the early cosmogonic or protocosmogonic speculations. But already then three different theses are discernible: a) one rather extreme view which upholds rigorously the strict oneness of the underlying substance and from its immutability infers the impossibility of change; this was the view of Parmenides and his disciples; b) the second view which, while retaining the Eleatic principle of the singleness and immutability of the basic stuff, admits its existence in a plural form. This is atomism which reduces change to a change of position. In other words, diversity is retained only in the form of numerical diversity, and change only in the form of spatial displacement. All apparently qualitative changes are thus explainable in terms of combination and recombination of the homogeneous and immutable elements. Such are the basic premises not only of ancient Greek atomism, but very nearly of all forms of atomism in all different periods of history. Its basic inspiration has always remained Eleatic, although a very important concession has been made to sensory perception in the sense that the reality of change has been admitted. But it is admitted in its most innocuous form—in the form of displacement of the unchanging units of Being.