there is a tendency to cling to the past — except, of course, as far as weapons of war are concerned. - Isaac Asimov

Find them? That I did,' cried Riose. His lips were stiff as he spoke. It seemed to require effort to refrain from grinding molars. 'Patrician, they are not magicians; they are devils. It is as far from belief as the outer nebulae from here. Conceive it! It is a world the size of a handkerchief, of a fingernail; with resources so petty, power so minute, a population so microscopic as would never suffice the most backward worlds of the dusty prefects of the Dark Stars. Yet with that, a people so proud and ambitious as to dream quietly and methodically of Galactic rule. 'Why, they are so sure of themselves that they do not even hurry. They move slowly, phlegmatically; they speak of necessary centuries. They swallow worlds at leisure; creep through systems with dawdling complacence. 'And they succeed. There is no one to stop them. They have built up a filthy trading community that curls its tentacles about the systems further than their toy ships dare reach. For parsecs, their Traders – which is what their agents call themselves

You may uncover more and, eventually, what seems altogether a mystery to us now may unfold and become plain.

Because, if you stop to think of it, the three Rules of Robotics are the essential guiding principles of a good many of the world's ethical systems. Of course, every human being is supposed to have the instinct of self-preservation. That's Rule Three to a robot. Also every 'good' human being, with a social conscience and a sense of responsibility, is supposed to defer to proper authority; to listen to his doctor, his boss, his government, his psychiatrist, his fellow man; to obey laws, to follow rules, to conform to custom — even when they interfere with his comfort or his safety. That's Rule Two to a robot. Also, every 'good' human being is supposed to love others as himself, protect his fellow man, risk his life to save another. That's Rule One to a robot. To put it simply — if Byerley follows all the Rules of Robotics, he may be a robot, and may simply be a very good man.