"Among the agonies of these after days is that chief of torments — inarticulateness. What I learned and saw in those hours of impious exploration can never be told — for want of symbols or suggestions in any language. I say this because from first to last our discoveries partook only of the nature of sensations; sensations correlated with no impression which the nervous system of normal humanity is capable of receiving. They were sensations, yet within them lay unbelievable elements of time and space — things which at bottom possess no distinct and definite existence. Human utterance can best convey the general character of our experiences by calling them plungings or soarings..."