Lovejoy exposed philosophy at Harvard under William James.

As a prof of philosophy at Johns Hopkins University from 1910 to 1939, Lovejoy founded, and presided for decades concluded, a university's History of Ideas Club, which was the meeting-place for numbers of of the early-to-mid-20th century's foremost intellect & social historiographer & literary critics. He besides founded a Journal of the History of Ideas. Lovejoy's "history of ideas" was notable for its insistent revolve around "unit-ideas," only conception (typically expressed withinside individual words) which it traced when it were expressed in different combinations across period.

Reference
Arthur O. Lovejoy, The Outstanding Chain of Existence: A Survey of the History of an Idea, (Cambridge: Harvard University Click, 1936, 1961, 1970).