Let us push still further into the hidden retreat of the soul. Here we are in these regions of twilight and dream, where our ego takes shape, where the spring within us gushes up, in the warm secrecy of the darkness which ushers our trembling being into birth. Distinctions fail us. Words are useless now. We hear the wells of consciousness at their mysterious task like an invisible shiver of running water through the mossy shadow of the caves. I dissolve in the joy of becoming. I abandon myself to the delight of being a pulsing reality. I no longer know whether I see scents, breathe sounds, or smell colours. Do I love? Do I think? The question has no longer a meaning for me. I am, in my complete self, each of my attitudes, each of my changes. It is not my sight which is indistinct or my attention which is idle. It is I who have resumed contact with pure reality, whose essential movement admits no form of number. He who thus makes the really "deep" and "inner" effort necessary to becoming--were it only for an elusive moment--discovers, under the simplest appearance, inexhaustible sources of unsuspected wealth; the rhythm of his duration becomes amplified and refined; his acts become more conscious; and in what seemed to him at first sudden severance or instantaneous pulsation he discovers complex transitions imperceptibly shaded off, musical transitions full of unexpected repetitions and threaded movements. Thus, the deeper we go in consciousness, the less suitable become these schemes of separation and fixity existing in spatial and numerical forms. The inner world is that of pure quality. There is no measurable homogeneity, no collection of atomically constructed elements. The phenomena distinguished in it by analysis are not composing units, but phases. And it is only when they reach the surface, when they come in contact with the external world, when they are incarnated in language or gesture, that the categories of matter become adapted to them. In its true nature, reality appears as an uninterrupted flow, an impalpable shiver of fluid changing tones, a perpetual flux of waves which ebb and break and dissolve into one another without shock or jar. Everything is ceaseless change; and the state which appears the most stable is already change, since it continues and grows old. Constant quantities are represented only by the materialisation of habit or by means of practical symbols. And it is on this point that Mr Bergson rightly insists. ("Creative Evolution", page 3.)