"The simple answer to whether McLuhan is being taught properly is to look at his own letters," says Theall. For it is in the Letters that McLuhan "stresses the centrality of poetry, art, the new technologically reproducible arts and the occult in his thought. As he says again and again, the symbolists, Eliot, Pound, Lewis and, in particular, Joyce coupled with Aquinas and the classical vision are the key to his work," says Theall.