After Dialectic of Enlightenment Horkheimer produced only occasional pieces, not sustained theory.

Evidence

Horkheimer’s own theoretical work was hardly progressing at all. Just as he had once mentioned his book on dialectics at every opportunity, he now constantly spoke of continuing his philosophical work now that he had finished the Philosophical Fragments. But its continuation never progressed beyond the stage of notes. After Dialectic of Enlightenment, he only produced occasional works during the 1940s, and these would barely have met even his own standards for leading articles in the journal. — Rolf Wiggershaus, The Frankfurt School, 417

Categorization

• XREF: Directly relevant to dating the end of Horkheimer’s major philosophical output, a key periodization in the school’s history. — connects to: Horkheimer found writing dialectical philosophy slow because it had to absorb recent decades’ experience. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 345; Horkheimer produced almost no serious theoretical work after Dialectic of Enlightenment. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 1683; Writing Dialectic of Enlightenment left Horkheimer intellectually exhausted — Rolf Wiggershaus, The Frankfurt School: Its History,…, 12
• yield-rescued: below the book’s yield-target cutoff, included anyway for connecting to: Horkheimer found writing dialectical philosophy slow because it had to absorb recent decades’ experience. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 345; Horkheimer produced almost no serious theoretical work after Dialectic of Enlightenment. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 1683; Writing Dialectic of Enlightenment left Horkheimer intellectually exhausted — Rolf Wiggershaus, The Frankfurt School: Its History,…, 12

Broader Connections

• Horkheimer produced almost no serious theoretical work after Dialectic of Enlightenment. #expands (0.95) — Rolf Wiggershaus, The Frankfurt School, 1683