[Sidenote: Its real impotence.] Of all forms of consciousness the one apparently most useful is pain, which is also the one most immersed in matter and most opposite to ideality and excellence. Its utility lies in the warning it gives: in trying to escape pain we escape destruction. That we desire to escape pain is certain; its very definition can hardly go beyond the statement that pain is that element of feeling which we seek to abolish on account of its intrinsic quality. That this desire, however, should know how to initiate remedial action is a notion contrary to experience and in itself unthinkable. If pain could have cured us we should long ago have been saved. The bitterest quintessence of pain is its helplessness, and our incapacity to abolish it. The most intolerable torments are those we feel gaining upon us, intensifying and prolonging themselves indefinitely. This baffling quality, so conspicuous in extreme agony, is present in all pain and is perhaps its essence. If we sought to describe by a circumlocution what is of course a primary sensation, we might scarcely do better than to say that pain is consciousness at once intense and empty, fixing attention on what contains no character, and arrests all satisfactions without offering anything in exchange. The horror of pain lies in its intolerable intensity and its intolerable tedium. It can accordingly be cured either by sleep or by entertainment. In itself it has no resource; its violence is quite helpless and its vacancy offers no expedients by which it might be unknotted and relieved.