Mr. Ussher deals with Shaw the theosophist and with Yeats the occultist. In Yeats's youth there were but two courses, says Mr. Ussher: "to join the Roman Church, or to link on with the “Secret Tradition” of Europe--surviving from Pagan times and just then reinforced by a new interest in the religions of India." Like everybody else who alludes to the "secret tradition" Mr. Ussher refuses to elucidate.