Positivism: Only Empirical Science?
This text is a preview of History of the Reception of Hegel, volume I, to be published in 2026 by Reflexivity Press.
Positivism radicalized the science challenge into a general renunciation of all metaphysics. Auguste Comte proclaimed the “law of the three stages”: humanity develops from the theological through the metaphysical to the positive stage. In the positive stage, cognition is restricted to the observable and measurable. All questions about “essence” and “causes” are meaningless—only regularities between phenomena can be investigated.[1]
Herbert Spencer transferred this basic stance to all fields of knowledge. His “synthetic philosophy” was meant to carry through the theory of evolution as a universal principle. Spencer replaced Hegel’s dialectical method with mechanical evolution—the universe develops from homogeneous simplicity to heterogeneous complexity through natural laws, not through logical necessity.[2]
John Stuart Mill developed the most influential epistemological grounding of positivism. In A System of Logic (1843) he argued that all cognition derives from experience and is obtained through inductive generalization. Hegel’s claim to deduce truths about reality from pure concepts, Mill held, was untenable. Logic is not a source of material cognition, but a merely formal instrument for ordering experience.[3]
The radical further development of positivism—Ernst Mach’s empirio-criticism and the logical empiricism of the Vienna Circle—is treated in detail in Chapter 12 (see 8.3 on Mach and 8.7 on the Vienna Circle). There, the systematic sharpening of the positivist challenge is presented in the context of analytic philosophy, where it found its most precise and most influential form.
The legitimate intuition of classical positivism is clear: empirical verifiability is an important criterion of truth. If a theory has no observable consequences, it is empty of content. The sciences have shown that methodical empiricism leads to reliable knowledge—while speculative philosophy often gets stuck in fruitless conceptual games.
The systematic limit, however, lies in positivist narrowing. Not all knowledge is empirical in the sense of sensory observation. Mathematics, logic, ethics operate with other criteria of truth. The structure of cognition itself—the transcendental or logical conditions of the possibility of experience—cannot be empirically observed. Positivism tacitly presupposes these structures while at the same time declaring their scientific investigation impossible.[4]
The reconstruction of Hegel developed here integrates the legitimate demand for empirical control without falling into positivist narrowing. The “resistance of experience” is a constitutive moment of the logic. The categories are not deduced, but discovered and tested in the exercise of practice. But this practice is not merely sensory observation, but encompasses all forms of rational action—including ethical deliberation, aesthetic experience, and philosophical reflection.[5]
Auguste Comte: Cours de philosophie positive, 6 volumes, Paris 1830-1842. ↩︎
Herbert Spencer: A System of Synthetic Philosophy, 10 volumes, London 1862-1896. ↩︎
John Stuart Mill: A System of Logic, 2 volumes, London 1843. ↩︎
This critique of positivism is already developed in: Theodor W. Adorno: Zur Metakritik der Erkenntnistheorie, Stuttgart 1956. ↩︎
Hegel’s Science of Logic (in preparation), Ch. 2.3, The Transition to Quantity - Methodological Reflection. ↩︎