There has been a general trend in recent times toward a Unitarian mythology and the worship of one God. This is the tendency which it is customary to regard as spiritual progress. On what grounds? Chiefly, so far as one can see, because we in the Twentieth Century West are officially the worshippers of a single divinity. A movement whose consummation is Us must be progressive. Quod erat demonstrandum.

One and Many, p. 16. - Do What You Will (1928)