Abstract The volume under review brings together three of John Deely’s most profound and original works: (1) a one hundred and thirteen page self-described “abstract” of Deely’s masterful Four Ages project that serves as an excellent overview of, and introduction to, that work; (2) his brilliant encomium on the genius of Thomas Sebeok and the necessity of a truly post-modern semiotic realism; and (3) his tour de force version of a Socratic dialogue between a semiotician and a “would-be realist” concerning how the “sign” relation is properly, and improperly, understood. A must-have volume for any serious student of semiotics, intellectual history, or philosophy, The Impact on Philosophy of Semiotics is one of John Deely’s richest, and yet often touchingly accessible, works.