Intelligence is a moral category.

Adorno’s aphoristic claim can be read as a refusal to treat “intelligence” as a neutral, purely cognitive capacity measurable apart from society. In his critical theory, what counts as intelligence is shaped by social power, education, and the demands of capitalist rationality; it is therefore implicated in responsibility and complicity. To call intelligence a “moral category” suggests that thinking well includes ethical orientation: attentiveness to suffering, resistance to cliché and propaganda, and the courage to judge. Conversely, “cleverness” that serves domination or adapts smoothly to an unjust world is, for Adorno, not morally innocent. The line compresses his broader insistence that reason and ethics cannot be cleanly separated.