Gilliatt was a man of dreams, hence his daring, hence also his timidity. He had ideas on many things which were peculiarly his own.

There was in his character, perhaps, something of the visionary and the transcendentalist. Hallucinations may haunt the poor peasant like Martin, no less than the king like Henry IV. There are times when the unknown reveals itself in a mysterious way to the spirit of man. A sudden rent in the veil of darkness will make manifest things hitherto unseen, and then close again upon the mysteries within. Such visions have occasionally the power to effect a transfiguration in those whom they visit. They convert a poor camel-driver into a Mahomet; a peasant girl tending her goats into a Joan of Arc. Solitude generates a certain amount of sublime exaltation. It is like the smoke arising from the burning bush. A mysterious lucidity of mind results, which converts the student into a seer, and the poet into a prophet: herein we find a key to the mysteries of Horeb, Kedron, Ombos; to the intoxication of Castilian laurels, the revelations of the month Busion. Hence, too, we have Peleia at Dodona, Phemonoe at Delphos, Trophonius in Lebadea, Ezekiel on the Chebar, and Jerome in the Thetais.

More frequently this visionary state overwhelms and stupefies its victim. There is such a thing as a divine besottedness. The Hindoo fakir bears about with him the burden of his vision, as the Cretin his goître. Luther holding converse with devils in his garret at Wittenburg; Pascal shutting out the view of the infernal regions with the screen of his cabinet; the African Obi conversing with the white-faced god Bossum; are each and all the same phenomenon, diversely interpreted by the minds in which they manifest themselves, according to their capacity and power. Luther and Pascal were grand, and are grand still; the Obi is simply a poor half-witted creature.

Gilliatt was neither so exalted nor so low. He was a dreamer: nothing more.

Nature presented itself to him under a somewhat strange aspect.

Just as he had often found in the perfectly limpid water of the sea strange creatures of considerable size and of various shapes, of the Medusa genus, which out of the water bore a resemblance to soft crystal, and which, cast again into the sea, became lost to sight in that medium by reason of their identity in transparency and colour, so he imagined that other transparencies, similar to these almost invisible denizens of the ocean, might probably inhabit the air around us. The birds are scarcely inhabitants of the air, but rather amphibious creatures passing much of their lives upon the earth. Gilliatt could not believe the air a mere desert. He used to say, "Since the water is filled with life, why not the atmosphere?" Creatures colourless and transparent like the air would escape from our observation. What proof have we that there are no such creatures? Analogy indicates that the liquid fields of air must have their swimming habitants, even as the waters of the deep. These aerial fish would, of course, be diaphanous; a provision of their wise Creator for our sakes as well as their own. Allowing the light to pass through their forms, casting no shadow, having no defined outline, they would necessarily remain unknown to us, and beyond the grasp of human sense. Gilliatt indulged the wild fancy that if it were possible to exhaust the earth of its atmosphere, or if we could fish the air as we fish the depths of the sea, we should discover the existence of a multitude of strange animals. And then, he would add in his reverie, many things would be made clear.

Reverie, which is thought in its nebulous state, borders closely upon the land of sleep, by which it is bounded as by a natural frontier. The discovery of a new world, in the form of an atmosphere filled with transparent creatures, would be the beginning of a knowledge of the vast unknown. But beyond opens up the illimitable domain of the possible, teeming with yet other beings, and characterised by other phenomena. All this would be nothing supernatural, but merely the occult continuation of the infinite variety of creation. In the midst of that laborious idleness, which was the chief feature in his existence, Gilliatt was singularly observant. He even carried his observations into the domain of sleep. Sleep has a close relation with the possible, which we call also the _invraisemblable_. The world of sleep has an existence of its own. Night-time, regarded as a separate sphere of creation, is a universe in itself. The material nature of man, upon which philosophers tell us that a column of air forty-five miles in height continually presses, is wearied out at night, sinks into lassitude, lies down, and finds repose. The eyes of the flesh are closed; but in that drooping head, less inactive than is supposed, other eyes are opened. The unknown reveals itself. The shadowy existences of the invisible world become more akin to man; whether it be that there is a real communication, or whether things far off in the unfathomable abyss are mysteriously brought nearer, it seems as if the impalpable creatures inhabiting space come then to contemplate our natures, curious to comprehend the denizens of the earth. Some phantom creation ascends or descends to walk beside us in the dim twilight: some existence altogether different from our own, composed partly of human consciousness, partly of something else, quits his fellows and returns again, after presenting himself for a moment to our inward sight; and the sleeper, not wholly slumbering, nor yet entirely conscious, beholds around him strange manifestations of life--pale spectres, terrible or smiling, dismal phantoms, uncouth masks, unknown faces, hydra-headed monsters, undefined shapes, reflections of moonlight where there is no moon, vague fragments of monstrous forms. All these things which come and go in the troubled atmosphere of sleep, and to which men give the name of dreams, are, in truth, only realities invisible to those who walk about the daylight world. The dream-world is the Aquarium of Night.

So, at least, thought Gilliatt.