”I readily believe that in the totality of things there are more invisible than visible natures. But who shall recount to us the family of all these things? and their degrees and relationships and distinctive signs and their individual functions? What do they do? What places do they inhabit? The human mind has always solicited knowledge of these matters but has never attained it. Meanwhile, I do not deny, it is sometimes pleasant to contemplate the image of a greater and better world in the mind as if in a picture, lest the mind, accustomed to the trivia of modern life, should shrink excessively and sink completely into petty musings. But at the same time one must be intent upon truth, and moderation must be observed, so that we may distinguish the sure from the unsure, day from night.

Samuel Taylor Coleridge, The Rime of the Ancient Mariner (from English Romantic Poetry: An Anthology)