The awareness of the unknown is earlier than the awareness of the known. Next to our mind are not names, words, symbols but the nameless, the inexpressible, being. It is otherness, remoteness upon which we come within all our experience.
Just as the simpleminded equates appearance with reality, so does the overwise equate the expressible with the ineffable, the symbolic with the metasymbolic.
The awareness of the ineffable, of the metasymbolic, is that with which our search must begin. Philosophy, enticed by the promise of the known, has often surrendered the treasures of higher incomprehension to poets and mystics, although without the sense of the ineffable there are no metaphysical problems, no awareness of being as being, of value as value.—Abraham Joshua Heschel in Moral Grandeur and Spiritual Audacity: Essays, 96