Conceive yourself, if possible, suddenly stripped of all the emotion with which your world now inspires you, and try to imagine it as it exists, purely by itself, without your favorable or unfavorable, hopeful or apprehensive comment. It will be almost impossible for you to realize such a condition of negativity and deadness. No one portion of the universe would then have importance beyond another; and the whole collection of its things and series of its events would be without significance, character, expression, or perspective.
In Tolstoy’s case the sense that life had any meaning whatever was for a time wholly withdrawn. The result was a transformation in the whole expression of reality. When we come to study the phenomenon of conversion or religious regeneration, we shall see that a not infrequent consequence of the change operated in the subject is a transfiguration of the face of nature in his eyes. A new heaven seems to shine upon a new earth. In melancholiacs there is usually a similar change, only it is in the reverse direction. The world now looks remote, strange, sinister, uncanny. Its color is gone, its breath is cold, there is no speculation in the eyes it glares with. “It is as if I lived in another century,” says one asylum patient.—”I see everything through a cloud,” says another, “things are not as they were, and I am changed.”—”I see,” says a third, “I touch, but the things do not come near me, a thick veil alters the hue and look of everything.”—”Persons move like shadows, and sounds seem to come from a distant world.”—”There is no longer any past for me; people appear so strange; it is as if I could not see any reality, as if I were in a theatre; as if people were actors, and everything were scenery; I can no longer find myself; I walk, but why? Everything floats before my eyes, but leaves no impression.”—”I weep false tears, I have unreal hands: the things I see are not real things.”—Such are expressions that naturally rise to the lips of melancholy subjects describing their changed state.
The Varieties of Religious Experience, William James, via wikisource