It remains true that any image [to contain, portray, or exceed God] is inadequate; but what people often fail to observe is that when, instead of making the image out of material things, you make it out of thoughts, if you make it yourself, it will be equally inadequate, and it is just as much idolatry to worship God according to a false mental image as by means of a false metal image. The mental image misrepresents God, and has the same disastrous effects on character. If your conception of God is radically false, then the more devout you are the worse it will be for you. You are opening your soul to be moulded by something base. You had much better be an atheist.
-William Temple, Archbishop of York (and later, of Canterbury), written in February 1931 and given as part of a sermon entitled “Place of Christ in History.” Published in his collection Christian Faith and Life, Macmillan, 1931.