Sergei Anatolyevich Starostin (Russian: Серге́й Анато́льевич Ста́ростин; March 24, 1953 – September 30, 2005) was a Russian historical linguist and philologist, perhaps best known for his reconstructions of hypothetical proto-languages, including his work on the controversial Altaic theory, the formulation of the Dené–Caucasian hypothesis, and the proposal of a Borean language of still earlier date. None of his proposed macrofamilies have seen wide-scale acceptance in the linguistic community (and are mostly seen as implausible), though his proposals remain influential outside of academia. He was also the author of a widely respected reconstruction of Old Chinese. Source: Wikipedia (en)