Seldon sighed as he climbed into one of the skitters that were ranked side by side in the large alcove. There had been a time, just a few years ago, when he had gloried in walking briskly along the interminable corridors of the Library, telling himself that even though he was past sixty he could manage it.

But now, at seventy, his legs gave way all too quickly and he had to take a skitter. Younger men took them all the time because skitters saved them trouble, but Seldon did it because he had to—and that made all the difference.

After Seldon punched in the destination, he closed a contact and the skitter lifted a fraction of an inch above the floor. Off it went at a rather casual pace, very smoothly, very silently, and Seldon leaned back and watched the corridor walls, the other skitters, the occasional walkers.

He passed a number of Librarians and, even after all these years, he still smiled when he saw them. They were the oldest Guild in the Empire, the one with the most revered traditions, and they clung to ways that were more appropriate centuries before—maybe millennia before.

Their garments were silky and off-white and were loose enough to be almost gownlike, coming together at the neck and billowing out from there.

Trantor, like all the worlds, oscillated, where the males were concerned, between facial hair and smoothness. The people of Trantor itself—or at least most of its sectors—were smooth-shaven and had been smooth-shaven for as far back as he knew—excepting such anomalies as the mustaches worn by Dahlites, such as his own foster son, Raych.

The Librarians, however, clung to the beards of long ago. Every Librarian had a rather short neatly cultivated beard running from ear to ear but leaving bare the upper lip. That alone was enough to mark them for what they were and to make the smooth-shaven Seldon feel a little uncomfortable when surrounded by a crowd of them.

Actually the most characteristic thing of all was the cap each wore (perhaps even when asleep, Seldon thought). Square, it was made of a velvety material, in four parts that came together with a button at the top. The caps came in an endless variety of colors and apparently each color had significance. If you were familiar with Librarian lore, you could tell a particular Librarian’s length of service, area of expertise, grades of accomplishment, and so on. They helped fix a pecking order. Every Librarian could, by a glance at another’s hat, tell whether to be respectful (and to what degree) or overbearing (and to what degree).

The Galactic Library was the largest single structure on Trantor (possibly in the Galaxy), much larger than even the Imperial Palace, and it had once gleamed and glittered, as though boasting of its size and magnificence. However, like the Empire itself, it had faded and withered. It was like an old dowager still wearing the jewels of her youth but