W.B. Yeats became a member of the magical Order of the Golden Dawn on 7 March 1890. According to its founder, W. W. Wescott, the Order was based on certain magical manuscripts written in code, and discovered on a book barrow in the Farringdon Road. Subsequent research proved this to be an invention, so everyone concluded that the Golden Dawn was a fraud. When I was doing a night class on Yeats in Leicester in 1948, I remember our professor, Philip Collins, explaining that we simply had to accept that the great poet was also a credulous idiot, the only extenuating circumstance being that he wanted to believe such rubbish because it gave him ‘material for poetry’.
Yeats himself would have rejected this with fury.