The thesis tries to define and explain the rudiments of a 'nonphilosophical' or 'non-decisional' theory of materialism on the basis of a theoretical framework provided by the 'non-philosophy' of Francois Laruelle. Neither anti-philosophical nor anti-materialist in character, non-materialism tries to construct a rigorously transcendental theory of matter by using certain instances of philosophical materialism as its source material. The materialist decision to identify the real with matter is seen to retain a structural isomorphy with the phenomenological decision to identify the (...) real with the phenomenon. Both decisions are shown to operate on the basis of a methodological idealism; materialism on account of its confusion of matter and concept; phenomenology by virtue of its confusion of phenomenon and logos. By dissolving the respectively 'materiological' and 'phenomenological' amlphibolies which are the result of the failure to effect a rigorously transcendental separation between matter and concept on the one hand; and between phenomenon and logos on the other, non-materialist theory proposes to mobilise the non-hybrid or non-decisional concepts of a 'matter-without-concept' and of a 'phenomenon-without-logos' in order to effect a unified but non-unitary theory of phenomenology and materialism. The result is a materialisation of thinking that operates according to matter's foreclosure to decision. That is to say, a transcendental theory of the phenomenon that licenses limitless phenomenological plasticity, unconstrained by the apparatus of eidetic intuition or any horizon of apophantic disclosure; yet one which is simultaneously a transcendental theory of matter, uncontaminated by the bounds of empirical perception and free of all phenomenological circumscription. (shrink)