There is a type of optical illusion in which one sees a black image against a white background, but with a change of perspective, the picture reverses to show a white image on a black background.
Our world is so precisely balanced that we can perceive it equally with or without an awareness of the divine presence.
A person who looks only at the natural world can live a full life without ever discovering the existence of another dimension.
And it is possible to always see that other dimension as well, so that one’s gaze changes focus and suddenly the proportions are completely reversed.
Elements that had been considered essential are now seen as only decorative, and what was considered reality is seen as no more than a background to reality.
Rabbi Adin Steinsaltz