We have traveled beyond the Nucleation, to the Boundary of Time and Space themselves. And ape-fingers have reached out to the Singularity that lies there — and pushed it back!

Star-light, now, was erupting from beneath the darkness, all around me; the stars were igniting everywhere; and soon the sky blazed, as bright everywhere as the surface of the sun.

An infinite universe!

You might look out, through the smoky clouds of London, at the stars which mark out the sky’s cathedral roof; it is all so immense, so unchanging, that it is easy to suppose that the cosmos is an unending thing, and that it has endured forever.

…But it cannot be so. And one only need ask a common sense question — why is the night sky dark? — to see why.

If you had an infinite universe, with stars and galaxies spread out through an endless void, then whichever direction in the sky you looked, your eye must meet a ray of light coming from the surface of a star. The night sky would glow everywhere as brightly as the sun…

The Constructors had challenged the darkness of the sky itself.

My impressions had an adamantine hardness: there was no blurring softness, no atmosphere, nothing but that infinite brilliancy set with myriad acute points and specks of light. Here and there I thought I could make out patterns and distinguishing features — constellations of brighter stars against the general background — but the whole effect was so dazzling that I could never find a given pattern twice.

My companion sparks of Plattnerite light — the Constructors, with Nebogipfel among them — receded from me, above and below, like green-glowing fragments of a dream. I was left isolated. I felt no fear, no discomfort. The buffeting I had experienced at the moment of Nonlinearity had faded, leaving me without a sense of place, time or duration…

But then — after an interval I could not measure — I perceived I was no longer alone.

The form before me coalesced against the star-light, as if a magic-lantern slide had been held up before me. It began as a mere shadow against that universal glare — at first I was not sure if there was anything there at all, save for the projections of my own desperate imagination — but at last it gained a sort of solidity.

It was a ball, apparently of flesh, dangling in space, as unsupported as I was. I judged it to be eight or ten feet from me (wherever, and whatever, I was) and perhaps four feet across. Tentacles dangled from its underside. I heard a soft, babbling sound. There was a fleshy beak, no sign of nostrils, and two huge eyelids which now wrinkled up like curtains, to reveal eyes — human eyes! — that fixed on me.

I recognized him, of course; he was one of the creatures which I had labeled Watchers — those enigmatic visions which had visited me during my trips through time.

The thing drifted closer to me. He held out his tentacles, and I saw those digits were articulated and gathered in two bunches, like distorted, elongated hands. The tentacles were not soft and boneless things, like a squid’s, but multiply jointed, and seemed to terminate in nails or hoofs — they were more like fingers, in fact.

Now it was as if he gathered me up. None of this could be real — I thought desperately — for I was no longer real — was I? I was a point of awareness; there was nothing of me to pick up, in this way…

And yet I felt cradled by him — oddly safe.

The Watcher was immense before me. His flesh was smooth, and covered with fine, downy hairs; his eyes were immense — sky-blue — with all the beautiful complexity of human eyes — and I could even smell him now; he had a soft animal musk about him, a scent of milk, perhaps. I was struck by how human he was. This may seem odd to you, but there — so close to the beast, and suspended in all that unstructured immensity — his common points with the human form were more striking than his grosser differences. I grew convinced that this was human: distorted by tremendous sweeps of evolutionary time, perhaps, but somehow akin to me.

Soon the Watcher released me, and I felt myself float away from him.

His eyes blinked; I heard the slow rustle of his eyelids. Then his huge gaze tracked around the searing, featureless sky, as if seeking something. With the softest of sighs, he drifted away from me. He turned as he did so, and his tentacles dangled after him.

For a moment a stab of panic flooded me — for I had no wish to be stranded again with my own company, here in the desolate perfection of Optimality — but in a moment I drifted after the Watcher. I went without volition, like an autumn leaf swept along by the passage of a carriage’s wheels.

I have mentioned those suggestions of constellations I had seen, shining against the background of light-drenched, infinite space. Presently it seemed to me that one group of stars, in the direction ahead of us, was scattering apart, like a flock of birds; while another, behind me (I was able to turn my point of view) was contracting.

Could it be so? I wondered. Could I be traveling with such enormous rapidity, that even the stars themselves moved across my field of view, like lamp-posts seen from a train?

Suddenly there came a flying multitude of particles of rock, glittering like dust-specks in a sunbeam; they swirled all about me, and vanished again in a twinkling, far behind. I saw nothing of planets, or other rocky objects, in my time in that Optimal History, save for that shoal of dust-motes; and I wondered if the great heat and intense radiation here would disrupt the coalescing of planets from the general debris.

Faster and faster the universe rushed by, a hail of whirling motes against the general brilliancy. Stars grew brighter, to shine out, explode from points into globes that hurtled at me, only to vanish in moments behind me.

We soared upwards, and hovered over the plane of a galaxy; it was a great Catherine-wheel of stars whose variegated colors shone, pale and attenuated, against the general whiteness of the background. But soon even this immense system was dwindling below me, now to a whirling, luminous disc, and at last to a minute patch of hazy light, lost amid millions of others.

And, throughout all this astonishing flight you must picture it — I had the vision of the dark, round shoulders of the Watcher, as he bobbed through that tide of light just ahead of me, quite unperturbed by the star-scapes through which we traveled.

I thought of the times I had witnessed this creature and his companions. There had been that faint hint of babbling during my first expeditions in time — and then my first clear view of a Watcher when, in the light of the dying sun of far futurity, I had watched that object struggling on the distant shoal — a thing like a football, glistening with the water. I had thought it, then, a denizen of that doomed world — but it had not been, any more than I. And, later, there had been those later visions — glimpsed through a glow of Plattnerite green — of the Watchers as they hovered about the machine, as I fled through time.

Throughout my brief, spectacular career as a Time Traveler, I saw now, I had been followed — studied — by the Watchers.

The Watchers must be able to follow at will the lines of Imaginary Time, crossing the infinite Histories of the Multiplicity with the ease of a steamship traversing an ocean’s currents; the Watchers had taken the crude, explosive Nonlinearity Engines developed by the Constructors and developed them to a fine pitch.

Now we journeyed into an immense void — a Hole in Space — which was walled off by threads and planes, sheets of light composed of galaxies and clouds of loose stars. Even here, millions of light years from the nearest of those star nebulae, the general wash of radiation persisted, and the sky all around me was alive with light. And beyond the rough walls of this cavity I could make out a larger structure: I could see that “my” void was but one of many in a greater field of star-systems. It was as if the universe was filled with a sort of foam, with bubbles blown into a froth of shining star-stuff.