monotonously, and long after his secretary went home he typed in his overheated box of an office on the hospital's third floor. What dragged him back was an unfamiliar lack of fluency. He prides himself on speed and a sleek, wry style. It never needs much forethought - typing and composing are one. Now he was stumbling. And though the professional jargon didn't desert him - it's second nature - his prose accumulated awkwardly. Individual words brought to mind unwieldy objects - bicycles, deckchairs, coat hangers - strewn across his path. He composed a sentence in his head, then lost it on the page, or typed himself into a grammatical cul-de-sac and had to sweat his way out. Whether this debility was the cause or the consequence of fatigue he didn't pause to consider. He was stubborn and he pushed himself to the end. At eight in the evening he concluded the last in a series of e-mails, and stood up from his desk where he had been hunched since four. On his way out he looked in at his patients in the ICU. There were no problems, and Andrea was doing fine - she was sleeping and all her signs were good. Less than half an hour later he was back home, in his bath, and soon after, he too was asleep.
Two figures in dark overcoats are crossing the square diagonally, walking away from him towards Cleveland Street, their high heels ticking in awkward counterpoint - nurses surely, heading home, though this is a strange time to be coming off shift. They aren't speaking, and though their steps don't match, they walk close, shoulders almost touching in an intimate, sisterly way. They pass right beneath him, and
12 Saturday
make a quarter-circular route around the gardens before striking off. There's something touching about the way their breath rises behind them in single clouds of vapour as they go, as though they're playing a children's game, imitating steam trains. They cross towards the far corner of the square, and with his advantage of height and in his curious mood, he not only watches them, but watches over them, supervising their progress with the remote possessiveness of a god. In the lifeless cold, they pass through the night, hot little biological engines with bipedal skills suited to any terrain, endowed with innumerable branching neural networks sunk deep in a knob of bone casing, buried fibres, warm filaments with their invisible glow of consciousness - these engines devise their own tracks.
He's been at the window several minutes, the elation is passing, and he's beginning to shiver. In the gardens, which are enclosed within a circle of high railings, a light frost lies on the landscaped hollows and rises of the lawn beyond the border of plane trees. He watches an ambulance, siren off, blue lights flashing, turn into Charlotte Street and accelerate hard southwards, heading perhaps for Soho. He turns from the window to reach behind him for a thick woollen dressing gown where it lies draped over a chair. Even as he turns, he's aware of some new element outside, in the square or in the trees, bright but colourless, smeared across his peripheral vision by the movement of his head. But he doesn't look back immediately. He's cold and he wants the dressing gown. He picks it up, threads one arm through a sleeve, and only steps back towards the window as he's finding the second sleeve and looping the belt around his waist.
He doesn't immediately understand what he sees, though he thinks he does. In this first moment, in his eagerness and curiosity, he assumes proportions on a planetary scale: it's a meteor burning out in the London sky, traversing left to right, low on the horizon, though well clear of the taller buildings. But surely meteors have a darting, needle-like quality. You
13 Ian McEwan
see them in a flash before their heat consumes them. This is moving slowly, majestically even. In an instant, he revises his perspective outward to the scale of the solar system: this object is not hundreds but millions of miles