Courtiers don't take wagers against the king's skill. There is a deadly danger of winning - Isaac Asimov

Now the plan was threatend by something more serious than the Mule had ever been. It was to be diverted from a renewal of Empire to something utterly different from anything in history - Galaxia. And he himself had agreed to that. But why? Was there a flaw in the plan? a basic flaw? For one flashing moment, it seemed to Trevize that this flaw did indeed exist and that he knew what it was, that he had known what it was when he made his decision - but the knowledge...if that were what it was...vanished as fast as it came, and left him with nothing.

A weak general could never have endangered us, obviously. A strong general during the time of a weak Emperor would never have endangered us, either; for he would have turned his arms towards a much more fruitful target. Events have shown that three-fourths of the Emperors of the last two centuries were rebel generals and rebel viceroys before they were Emperors. 'So it is only the combination of strong Emperor and strong general that can harm the Foundation; for a strong Emperor can not be dethroned easily, and a strong general is forced to turn outwards, past the frontiers. 'But, what keeps the Emperor strong? What kept Cleon strong? It's obvious. He is strong, because he permits no strong subjects. A courtier who becomes too rich, or a general who becomes too popular is dangerous. All the recent history of the Empire proves that to any Emperor intelligent enough to be strong.

They want to be treated as equals, they say, and so they do, but, given a chance, they have no desire to treat others as equals.