Eclipse of Reason’s objective-subjective distinction originated in a 1942 article

Evidence

Horkheimer was working with two distinct concepts of reason here. First, reason was equated with thoughtthis corresponded to the later concept of objective reason' in Horkheimer's Eclipse of Reason; then it was seen as an instrument serving self-preservationsubjective reason’, as it was termed in the Eclipse. Was instrumental reason therefore in conflict with thoughtful reason? — Rolf Wiggershaus, The Frankfurt School, 1307

Categorization

• XREF: Precisely dates and locates the origin of the objective-versus-subjective reason distinction that Horkheimer would later develop fully in Eclipse of Reason (1947).