the two raindrops arrived at midmorning. raindrop forty-five seemed as cheerful as ever, but raindrop forty-three paused just inside the door, looking drawn and circumspect. she kept her eyes down and did not as much as glance at seldon.

seldon looked uncertain and gestured to dors, who said in a cheerful businesslike tone of voice, "one moment, sisters. i must give instructions to my man or he wont know what to do with himself today."

they moved into the bathroom and dors whispered, "is something wrong?"

"yes. raindrop forty-three is obviously shattered. please tell her that i will return the book as soon as possible."

dors favored seldon with a long surprised look. "hari," she said, "youre a sweet, caring person, but you havent the good sense of an amoeba. if i as much as mention the book to the poor woman, shell be certain that you told me all about what happened yesterday and then shell really be shattered. the only hope is to treat her exactly as i would ordinarily."

seldon nodded his head and said dispiritedly, "i suppose youre right."

dors returned in time for dinner and found seldon on his cot, still leafing through the book, but with intensified impatience. he looked up with a scowl and said, "if were going to be staying here any length of time, were going to need a communication device of some sort between us. i had no idea when youd get back and i was a little concerned."

"well, here i am," she said, removing her skincap gingerly and looking at it with more than a little distaste. "im really pleased at your concern. i rather thought youd be so lost in the book, you wouldnt even realize i was gone."

seldon snorted.

dors said, "as for communications devices, i doubt that they are easy to come by in mycogen. it would mean easing communication with tribespeople outside and i suspect the leaders of mycogen are bound and determined to cut down on any possible interaction with the great beyond."

"yes," said seldon, tossing the book to one side, "i would expect that from what i see in the book. did you find out about the whatever you called it ... the temple?"

"yes," she said, removing her eyebrow patches. "it exists. there are a number of them over the area of the sector, but theres a central building that seems to be the important one.--would you believe that one woman noticed my eyelashes and told me that i shouldnt let myself be seen in public? i have a feeling she intended to report me for indecent exposure."

"never mind that," said seldon impatiently. "do you know where the central temple is located?"

"i have directions, but raindrop forty-five warned me that women were not allowed inside except on special occasions, none of which are coming up soon. its called the sacratorium."

"the what."

"the sacratorium."

"what an ugly word. what does it mean?"

dors shook her head. "its new to me. and neither raindrop knew what it meant either. to them, sacratorium isnt what the building is called, its what it is. asking them why they called it that probably sounded like asking them why a wall is called a wall."

"is there anything about it they do know?"

"of course, hari. they know what its for. its a place thats devoted to something other than the life here in mycogen. its devoted to another world, a former and better one."

"the world they once lived on, you mean?"

"exactly. raindrop forty-five all but said so, but not quite. she couldnt bring herself to say the word."

"aurora?"

"thats the word, but i suspect that if you were to say it out loud to a group of mycogenians, they would be shocked and horrified. raindrop forty-five, when she said, the sacratorium is dedicated to--, stopped at that point and carefully wrote out the letters one by one with her finger on the palm of her hand. and she blushed, as though she was doing something obscene."

"strange," said seldon. "if the book is an accurate guide, aurora is their dearest memory, their chief point of unification, the center about which everything in mycogen revolves. why should its mention be considered obscene? are you sure you didnt misinterpret what the sister meant?"

"im positive. and perhaps its no mystery. too much talk about it would get to tribespeople. the best way of keeping it secret unto themselves is to make its very mention taboo."

"taboo?"

"a specialized anthropological term. its a reference to serious and effective social pressure forbidding some sort of action. the fact that women are not allowed in the sacratorium probably has the force of a taboo. im sure that a sister would be horrified if it was suggested that she invade its precincts."

"are the directions you have good enough for me to get to the sacratorium on my own?"

"in the first place, hari, youre not going alone. im going with you. i thought we had discussed the matter and that i had made it clear that i cannot protect you at long distance--not from sleet storms and not from feral women. in the second place, its impractical to think of walking there. mycogen may be a small sector, as sectors go, but it simply isnt that small."

"an expressway, then."

"there are no expressways passing through mycogenian territory. it would make contact between mycogenians and tribespeople too easy. still, there are public conveyances of the kind that are found on less developed planets. in fact, thats what mycogen is, a piece of an undeveloped planet, embedded like a splinter in the body of trantor, which is otherwise a patchwork of developed societies.--and hari, finish with the book as soon as possible. its apparent that rainbow forty-three is in trouble as long as you have it and so will we be if they find out."

"do you mean a tribesperson reading it is taboo?"

"im sure of it."

"well, it would be no great loss to give it back. i should say that 95 percent of it is incredibly dull; endless in-fighting among political groups, endless justification of policies whose wisdom i cannot possibly judge, endless homilies on ethical matters which, even when enlightened, and they usually arent, are couched with such infuriating self-righteousness as to almost enforce violation."

"you sound as though i would be doing you a great favor if i took the thing away from you."

"except that theres always the other 5 percent that discusses the never-to-be-mentioned aurora. i keep thinking that there may be something there and that it may be helpful to me. thats why i wanted to know about the sacratorium.

"do you hope to find support for the books concept of aurora in the sacratorium?"

"in a way. and im also terribly caught up in what the book has to say about automata, or robots, to use their term. i find myself attracted to the concept."

"surely, you dont take it seriously?"

"almost. if you accept some passages of the book literally, then there is an implication that some robots were in human shape."

"naturally. if youre going to construct a simulacrum of a human being, you will make it look like a human being."

"yes, simulacrum means likeness, but a likeness can be crude indeed. an artist can draw a stick figure and you might know he is representing a human being and recognize it. a circle for the head, a stalk for the body, and four bent lines for arms and legs and you have it. but i mean robots that really look like a human being, in every detail."

"ridiculous, hari. imagine the time it would take to fashion the metal of the body into perfect proportions, with the smooth curve of underlying muscles."

"who said metal, dors? the impression i got is that such robots were organic or pseudo-organic, that they were covered with skin, that you could not easily draw a distinction between them and human beings in any way."

"does the book say that?"

"not in so many words. the inference, however--"

"is your inference, hari. you cant take it seriously."

"let me try. i find four things that i can deduce from what the book says about robots--and i followed up every reference the index gave. first, as i say, they--or some of them--exactly resembled human beings; second, they had very extended life spans--if you want to call it that."

"better say effectiveness, " said dors, "or youll begin thinking of them as human altogether."

"third," said seldon, ignoring her, "that some--or, at any rate, at least one--continues to live on to this day."

"hari, thats one of the most widespread legends we have. the ancient hero does not die but remains in suspended animation, ready to return to save his people at some time of great need. really, hari."

"fourth," said seldon, still not rising to the bait, "there are some lines that seem to indicate that the central temple--or the sacratorium, if thats what it is, though i havent found that word in the book, actually--contains a robot." he paused, then said, "do you see?"

dors said, "no. what should i see?"

"if we combine the four points, perhaps a robot that looks exactly like a human being and that is still alive, having been alive for, say, the last twenty thousand years, is in the sacratorium."

"come on, hari, you cant believe that."

"i dont actually believe it, but i cant entirely let go either. what if its true? what if--its only one chance out of a million, i admit--its true? dont you see how useful he could be to me? he could remember the galaxy as it was long before any reliable historical records existed. he might help make psychohistory possible."

"even if it was true, do you suppose the mycogenians would let you see and interview the robot?"

"i dont intend to ask permission. i can at least go to the sacratorium and see if theres something to interview first."

"not now. tomorrow at the earliest. and if you dont think better of it by morning, we go."

"you told me yourself they dont allow women--"

"they allow women to look at it from outside, im sure, and i suspect that is all well get to do."

and there she was adamant.

hari seldon was perfectly willing to let dors take the lead. she had been out in the main roadways of mycogen and was more at home with them than he was. dors venabili, brows knitted, was less delighted with the prospect. she said, "we can easily get lost, you know."

"not with that booklet," said seldon.

she looked up at him impatiently. "fix your mind on mycogen, hari. what i should have is a computomap, something i can ask questions of. this mycogenian version is just a piece of folded plastic. i cant tell this thing where i am. i cant tell it by word of mouth and i cant even tell it by pushing the necessary contacts. it cant tell me anything either way. its a print thing."

"then read what it says."

"thats what im trying to do, but its written for people who are familiar with the system to begin with. well have to ask."

"no, dors. that would be a last resort. i dont want to attract attention. i would rather we take our chances and try to find our own way, even if it means making one or two wrong turns."

dors leafed through the booklet with great attention and then said grudgingly, "well, it gives the sacratorium important mention. i suppose thats only natural. i presume everyone in mycogen would want to get there at one time or another." then, after additional concentration, she said, "ill tell you what. theres no way of taking a conveyance from here to there."

"what?"

"dont get excited. apparently, theres a way of getting from here to another conveyance that will take us there. well have to change from one to another."

seldon relaxed. "well, of course. you cant take an expressway to half the places on trantor without changing."

dors cast an impatient glance at seldon. "i know that too. its just that im used to having these things tell me so. when they expect you to find out for yourself, the simplest things can escape you for a while."

"all right, dear. dont snap. if you know the way now, lead. i will follow humbly."

and follow her he did, until they came to an intersection, where they stopped. three white-kirtled males and a pair of gray-kirtled females were at the same intersection. seldon tried a universal and general smile in their direction, but they responded with a blank stare and looked away. and then the conveyance came. it was an outmoded version of what seldon, back on helicon, would have called a gravi-bus. there were some twenty upholstered benches inside, each capable of holding four people. each bench had its own doors on both sides of the bus. when it stopped, passengers emerged on either side. (for a moment, seldon was concerned for those who got out on the traffic side of the gravi-bus, but then he noticed that every vehicle approaching from either direction stopped as it neared the bus. none passed it while it was not moving.)

dors pushed seldon impatiently and he moved on to a bench where two adjoining seats were available. dors followed after. (the men always got on and got off first, he noticed.)