Jaadian asked hopefully, "Then you agree to our offer?"

Fair shook his head. "How could I live, forever young, capable of extended learning, but limited to knowledge which I already see bounds to? I would be bored, restless, miserable."

"That well may be," said Jaadian. "But not so bored, restless and miserable as if you were learned in green magic."

Fair drew himself erect. "I must learn green magic. It is an opportunity which only a person both torpid and stupid could refuse."

Jaadian sighed. "In your place I would make the same response." The sprites rose to their feet. "Come then, we will teach you."

"Don't say we didn't warn you," said Misthemar.

Time passed. Sunset waned and twilight darkened. A man walked up the stairs, entered Howard Fair's apartment. He was tall, unobtrusively muscular. His face was sensitive, keen, humorous; his left thumb-nail glistened green.

Time is a function of vital processes. The people of Earth had perceived the motion of their clocks. On this understanding, two hours had elapsed since Howard Fair had followed the green sprites from the bar.

Howard Fair had perceived other criteria. For him the interval had been seven hundred years, during which he had lived in the green realm, learning to the utmost capacity of his brain.

He had occupied two years training his senses to the new conditions. Gradually he learned to walk in the six basic three-dimensional directions, and accustomed himself to the fourth-dimensional short-cuts. By easy stages the blinds over his eyes were removed, so that the dazzling over-human intricacy of the landscape never completely confounded him.

Another year was spent training him to the use of a code language--an intermediate step between the vocalizations of Earth and the meaning patterns of the green realm, where a hundred symbol-flakes (each a flitting spot of delicate iridescence) might be displayed in a single swirl of import. During this time Howard Fair's eyes and brain were altered, to allow him the use of the many new colors, without which the meaning-flakes could not be recognized.

These were preliminary steps. For forty years he studied the flakes, of which there were almost a million. Another forty years was given to elementary permutations and shifts, and another forty to parallels, attenuation, diminishments and extensions; and during this time he was introduced to flake patterns, and certain of the more obvious displays.

Now he was able to study without recourse to the code language, and his progress became more marked. Another twenty years found him able to recognize more complicated Meanings, and he was introduced to a more varied program. He floated over the field of moth-wing mosaics, which still showed the footprints of the golem. He sweated in embarrassment, the extent of his wicked willfulness now clear to him.

So passed the years. Howard Fair learned as much green magic as his brain could encompass.

He explored much of the green realm, finding so much beauty that he feared his brain might burst. He tasted, he heard, he felt, he sensed, and each one of his senses was a hundred times more discriminating than before. Nourishment came in a thousand different forms: from pink eggs which burst into a hot sweet gas, suffusing his entire body; from passing through a rain of stinging metal crystals; from simple contemplation of the proper symbol.

Homesickness for Earth waxed and waned. Sometimes it was insupportable and he was ready to forsake all he had learned and abandon his hopes for the future. At other times the magnificence of the green realm permeated him, and the thought of departure seemed like the threat of death itself.

By stages so gradual he never realized them he learned green magic.

But the new faculty gave him no pride: between his crude ineptitudes and the poetic elegance of the sprites remained a tremendous gap, and he felt his innate inferiority much more keenly than he ever had in his old state. Worse, his most earnest efforts failed to improve his technique, and sometimes, observing the singing joy of an improvised manifestation by one of the sprites, and contrasting it to his own labored constructions, he felt futility and shame.

The longer he remained in the green realm, the stronger grew the sense of his own maladroitness, and he began to long for the easy environment of Earth, where each of his acts would not shout aloud of vulgarity and crassness. At times he would watch the sprites (in the gossamer forms natural to them) at play among the pearl-petals, or twining like quick flashes of music through the forest of pink spirals. The contrast between their verve and his brutish fumbling could not be borne and he would turn away. His self-respect dwindled with each passing hour, and instead of pride in his learning, he felt a sullen ache for what he was not and could never become. The first few hundred years he worked with the enthusiasm of ignorance, for the next few he was buoyed by hope. During the last part of his time, only dogged obstinacy kept him plodding through what now he knew for infantile exercises.

In one terrible bittersweet spasm, he gave up. He found Jaadian weaving tinkling fragments of various magics into a warp of shining long splines. With grave courtesy, Jaadian gave Fair his attention, and Fair laboriously set forth his meaning.

Jaadian returned a message. "I recognize your discomfort, and extend my sympathy. It is best that you now return to your native home."

He put aside his weaving and conveyed Fair down through the requisite vortices. Along the way they passed Misthemar. No flicker of meaning was expressed or exchanged, but Howard Fair thought to feel a tinge of faintly malicious amusement.

Howard Fair sat in his apartment. His perceptions, augmented and sharpened by his sojourn in the green realm, took note of the surroundings. Only two hours before, by the clocks of Earth, he had found them both restful and stimulating; now they were neither. His books: superstition, spuriousness, earnest nonsense. His private journals and workbooks: a pathetic scrawl of infantilisms. Gravity tugged at his feet, held him rigid. The shoddy construction of the house, which heretofore he never had noticed, oppressed him. Everywhere he looked he saw slipshod disorder, primitive filth. The thought of the food he must now eat revolted him.

He went out on his little balcony which overlooked the street. The air was impregnated with organic smells. Across the street he could look into windows where his fellow humans lived in stupid squalor.

Fair smiled sadly. He had tried to prepare himself for these reactions, but now was surprised by their intensity. He returned into his apartment. He must accustom himself to the old environment. And after all there were compensations. The most desirable commodities of the world were now his to enjoy.

Howard Fair plunged into the enjoyment of these pleasures. He forced himself to drink quantities of expensive wines, brandies, liqueurs, even though they offended his palate. Hunger overcame his nausea, he forced himself to the consumption of what he thought of as fried animal tissue, the hypertrophied sexual organs of plants. He experimented with erotic sensations, but found that beautiful women no longer seemed different from the plain ones, and that he could barely steel himself to the untidy contacts. He bought libraries of erudite books, glanced through them with contempt. He tried to amuse himself with his old magics; they seemed ridiculous.

He forced himself to enjoy these pleasures for a month; then he fled the city and established a crystal bubble on a crag in the Andes. To nourish himself, he contrived a thick liquid, which, while by no means as exhilarating as the substances of the green realm, was innocent of organic contamination.