It is amazing what you can tell even with your eyes quite tightly closed. I can tell, for example, what season it is, what sort of day it is, which nurses and orderlies are on duty, which other patients have visited my room, which day of the week it is, and whether someone has died.

None of this is difficult and certainly none of it is in any way supernatural. It simply requires that one keeps one’s ears open and one’s senses attuned to everyday reality. A good memory for previous experiences helps too, as does a decent imagination. The imagination is necessary not to make things up – that would be wrong – but to come up with plausible scenarios for what one’s senses are detecting; theories that might explain what is going on.

Sometimes I spend entire days with my eyes closed. I pretend to sleep – I do sleep, longer than I would otherwise – and I allow my other senses to paint the scene around me. I can hear wind and rain against the window and birdsong outside, I can tell from the faint draught and the definition and detail of the sounds outside that the window is ajar, even if I missed the creaking, scraping noise of it being opened, and from the scents that reach me from it and the feel of the air I know immediately whether it’s a summer’s day or an unusually warm interlude in either spring or autumn. I can smell the identifying body odours and perfumes of the nurses and doctors who attend me and so can tell who is there even without hearing their voices, though I know those too, of course.

Occasionally other patients wander in and I know they are there from their institutional, medicinal smell. I don’t mix with them sufficiently to have built up a reliable database of them all as individuals, though one or two do stand out through body odour or what they do; one man smells of a particular cologne, one old lady carries with her the scent of violets, another always runs her fingers through my hair (I can peek through not-quite-closed eyelids and so see who is responsible when something like this happens). One small, gaunt man whistles aimlessly more or less all the time and another chubbier fellow never visits without tapping absently on the metal frame at the foot of the bed with his fingernails.

The rhythms of the hospital day, week, month and year are also obvious without recourse to sight and the place, of course, feels and sounds quite different at night; most noticeably, far quieter. During the day, meals are regular, drug rounds too (there are two drug trollies – one has a squeaky wheel), doctors perform their various rounds according to a certain timetable and the cleaners have an entirely predictable set of rotas that cover every temporal scale from daily dusting and wiping to the annual spring clean.

So, very little escapes me as I lie here, even with the most informational of my senses deliberately denied.

I can see perfectly well, though. This is really just a game, something to help occupy my time while I wait out my self-imposed exile and bide my time before returning to the fray.

I will, most assuredly, be back.

Once, I watched her hand move above a lit candle, through the yellow flame, fingers spread fluttering amidst the incandescing gas, her unharmed flesh ruffling the very burning of it. The flame bent this way and that, guttered, sent curls of sooty smoke towards the dim ceiling of the room where we sat as she moved her hand slowly back and forth through the gauzy teardrop of fire.

She said, “No, I see consciousness as a matter of focus. It’s like a magnifying glass concentrating light rays on a point on a surface until it bursts into flame – the flame being consciousness. It is the focusing of reality that creates that self-awareness.” She looked up at me. “Do you see?”

I nodded, though I was not sure that I did see. We had taken certain drugs, and they were still affecting us. I knew enough to realise that one could talk utter nonsense in such circumstances and that it could seem unutterably profound at the time. I knew it but at the same time felt that this was quite different.

“There is no intelligence without context,” she continued, watching her hand go through the flame and back. “Just as a magnifying glass effectively casts a partial shadow around the point of its focus – the debt required to produce the concentration elsewhere – so meaning is sucked out of our surroundings, concentrated in ourselves, in our minds.”

One summer when I was a teenager some friends and I were walking into town, saving our bus fares to have more money to spend on sweets, burgers and slot machines. Our route took us down a quiet suburban street of houses with small front gardens. We came to one garden – mostly paved, with a few mismatched pots holding dry, bedraggled-looking plants – where a fat grey-haired man was lying asleep in a deckchair. We all stopped to look, sweating. A couple of the guys had taken their T-shirts off and were bare-chested, like the old man. He had lots of curly grey hair on his chest. Somebody whispered that he looked like a beached whale. The garden was tiny; he’d had to angle the deckchair across it to fit in. He was so close that you could smell the coconut oil on his skin, so close that we could almost touch him.

We stood there watching him sleep and somebody else said they wished we had a water pistol. The sun was behind us, light beating on our backs. I was the tallest and the shadow of my head was putting the man’s feet into shade. I remembered I had a magnifying glass with me. I’d been using it to burn holes in the leaves of my stepmother’s prize flowers.

“Watch this,” I said, and took the magnifying glass out. I held it so that it focused the sunlight on the skin of his chest, then moved it along and up through the forest of glinting grey hairs to concentrate the light on his little puckered left nipple. Some of the guys were starting to laugh already. I began to laugh too, which made the small, bright point of light waver, but I held it steady enough and long enough for him to shift a little, and for a frown to appear on his face. I still think I saw a faint wisp of smoke. Then his eyes flicked open and he bellowed, sitting up suddenly, his eyes wide, one hand flying up to his singed nipple. The other guys were already running, howling with laughter, down the street. I sprinted after them. We heard him shouting after us. We avoided that street for a few weeks.

I don’t mention this story to her, either at the time or ever.

“I’d have said,” (I said, instead,) “that we give, even… Even that we radiate, emanate meaning. We ascribe context to external things. Without us they exist, I suppose-”

“Do they?” she murmured.

“-but we give them names and we see the systems and processes that link them. We contextualise them within their setting. We make them more real by knowing what they mean and represent.”

“Hnn,” she said, shrugging fractionally, distracted by the sight of her hand moving through the flame. “Maybe.” It sounded like she was losing interest. “But everything requires a leavening. Everything.” She let her head fall slowly to one side, watching her hand moving through the flame with a perfectly absorbed intensity that left me free to look at her.

She sat bundled in a crumpled white sheet. Her hair, a brown-red spill of curls across her shoulders and along her slender neck, formed a quiet nimbus around her tipped head. Her deep brown eyes looked almost black, reflecting the flickering candlelight like some image of the consciousness that she had been speculating about. They looked perfectly still and steady. I could see the minuscule spark of the flame reflected in them, see it occluded by her hand passing over it. She blinked slowly, almost languorously.