 His book "A Modern Zoroastrian" argued that the ancient religion of Zoroastrianism was more consistent with modern scientific thought than was traditional Christianity.He argued that the "all pervading principle of polarity" that was central Zoroastrian thought has been confirmed by science, and that modern Christianity should abandon its traditional theology to centre on the figure of Jesus as an ideal of humanity.He died on 6 August 1897 in Sydenham, England and was buried in the Brighton Extra Mural Cemetery.