" Think of a world of people born blind who, therefore, know only those objects and relations that exist through the sense of touch. Go among them, and speak to them of colors and the other relations that exist only through light and for the sense of sight. You will convey nothing to their minds, and this will be the more fortunate if they tell you so, for you will then quickly notice your mistake and, if unable to open their eyes, you will cease talking in vain . . . . "

― Rudolf Steiner , The Essential Rudolf Steiner: Theosophy: An Introduction to the Supersensible Knowledge of the World and the Destination of Man; An Esoteric Cosmology; ... Waldorf Education; How to Know Higher Worlds