Blake and Tradition is an investigation of the sources of Blake's knowledge of the Neoplatonic and Hermetic tradition and allied currents of thought. The volumes contain what was then new information on Blake's vast fund of exact knowledge in these fields, and Kathleen Raine interprets his works in the light of the ideas that originally inspired and informed them.
The core of this important work of scholarship formed the A. W. Mellon Lectures in the Fine Arts in 1962 at the National Gallery of Art in Washington. The expanded, two-volume work was originally published by Routledge & Kegan Paul in 1969.