The Humanist Manifesto Is a Revisable Statement, Not a Creed

Organised Humanism treats the Humanist Manifesto not as a fixed creed but as a statement of its current position, deliberately rewritten as understanding changes: the American Humanist Association, custodian of the tradition, has issued three versions, in 1933, 1973 and 2003, each replacing rather than merely supplementing the one before it. The primary texts themselves record the shift in content across the three: Humanist Manifesto I in 1933 spoke in a religious register, several of its signatories Unitarian ministers describing humanism as a new form of religious faith centred on human welfare rather than on God; Humanist Manifesto II in 1973 dropped that religious framing and broadened its scope to civil liberties, world community and opposition to what it called dogmatic and doctrinaire faiths; and Humanist Manifesto III in 2003, titled Humanism and Its Aspirations, is markedly shorter than either predecessor, stating core commitments in broad terms rather than itemising positions on specific contemporary issues. The Oxford Handbook of Atheism reads this pattern of revision as the point rather than as a defect, a document built to be corrected as the movement's own understanding develops standing in deliberate contrast to a creed, whose entire authority depends on staying fixed rather than being open to revision.

The American Humanist Association has no single founder, having formed by consolidating existing humanist associations rather than emerging from one figure's ministry, and the Oxford Handbook of Atheism names Curtis W. Reese and Edwin H. Wilson among its formative organisers. The association's role as custodian of the Humanist Manifesto tradition sits alongside its practical work certifying humanist celebrants and chaplains to perform weddings, funerals and other life-cycle ceremonies without invoking a deity, and campaigning for the separation of church and state in American law, activities the primary manifestos themselves treat as extensions of the same underlying commitment to human welfare and reason rather than as separate causes. Stephen LeDrew's history of the modern secular movement situates the association within a wider and often internally contentious American secular landscape, one that includes explicitly atheist organisations, humanist associations and Ethical Culture societies whose relationships to one another have shifted over decades of overlapping and sometimes competing membership. The association's custodianship of the manifesto tradition has functioned, in that landscape, as one of the few fixed points of continuity, the revised text itself changing across 1933, 1973 and 2003 while the institutional body responsible for issuing it has remained the same.