A history of philosophy could not ignore the ancient teachers around whom so much learned argument had accumulated. Johann Jakob Brucker (1696–1770) included them in his Historia Critica Philosophiae (1742–44), while questioning whether their supposed teachings and pedigrees deserved belief. His readers needed to know how accounts of early wisdom had been assembled, including the errors that respected authors repeated. Exposing an invented ancestry was part of explaining the history of learning.
Claims linking Indian priests to Abraham, for example, required more than a resemblance between words. A fabricated source might have supported a genealogy whose later reputation concealed its beginning. Brucker examined such claims, but he also retained broad divisions among eastern peoples, Greek thinkers, and later schools that earlier scholarship had helped establish. He was revising an inherited history without replacing every category through which readers understood it. Criticism changed what appeared within those divisions as much as it changed the divisions themselves.
An English adaptation extended the book’s reach. A reader looking up Indian philosophy encountered both a proposed biblical ancestry and the reasons for rejecting it, with enough detail to pursue either part of the discussion. Later compilers did not always keep the objections beside the claims they selected. Brucker’s reference work preserved the old arguments in the process of examining them, and made them available to people who might never consult the books in which they first appeared.