Rudolf Steiner, October 12, 1923:
"Above, illuminated as it were by the power of Uriel's eyes, the Dove. The silver-sparkling blue below, arising from the depths of the earth and bound up with human weakness and error, is gathered into a picture of the Earth Mother. Whether she is called Demeter or Mary, the picture is of the Earth Mother. So it is that in directing our gaze downwards we cannot do otherwise than bring together in Imagination all those secrets of the depths which go to make up the Earth Mother of all existence; while in all that is concentrated in the flowing form above we feel and experience the Spirit Father of everything around us. And now we behold the outcome of the working together of Spirit Father with Earth Mother, bearing so beautifully within itself the harmony of the earthly silver and the gold of the heights. Between the Father and the Mother we behold the Son. Thus there arises this Imagination of the Trinity which is really the Saint John Imagination. The background of it is Uriel, the creative, admonishing Uriel."