“An Outside Context Problem was the sort of thing most civilisations encountered just once, and which they tended to encounter rather in the same way a sentence encountered a full stop.”

“Even galaxy-spanning anarchist utopias of stupefying full-spectrum civilisational power have turf wars within their unacknowledged militaries.”

“Stories set in the Culture in which Things Went Wrong tended to start with humans losing or forgetting or deliberately leaving behind their terminal. It was a conventional opening, the equivalent of straying off the path in the wild woods in one age, or a car breaking down at night on a lonely road in another.”

“All reality is a game. Physics at its most fundamental, the very fabric of our universe, results directly from the interaction of certain fairly simple rules, and chance; the same description may be applied to the best, most elefant and both intellectually and aesthetically satisfying games. By being unknowable, by resulting from events which, at the sub-atomic level, cannot be fully predicted, the future remains makkeable, and retains the possibility of change, the hope of coming to prevail; victory, to use an unfashionable word. In this, the future is a game; time is one of the rules. Generally, all the best mechanistic games - those which can be played in any sense "perfectly", such as a grid, Prallian scope, 'nkraytle, chess, Farnic dimensions - can be traced to civilisations lacking a realistic view of the universe (let alone the reality). They are also, I might add, invariably pre-machine-sentience societies. The very first-rank games acknowledge the element of chance, even if they rightly restrict raw luck. To attempt to construct a game on any other lines, no matter how complicated and subtle the rules are, and regardless of the scale and differentiation of the playing volume and the variety of the powers and attibutes of the pieces, is inevitably to schackle oneself to a conspectus which is not merely socially but techno-philosophically lagging several ages behind our own. As a historical exercise it might have some value, As a work of the intellect, it's just a waste of time. If you want to make something old-fashioned, why not build a wooden sailing boat, or a steam engine? They're just as complicated and demanding as a mechanistic game, and you'll keep fit at the same time.”

“I'm too drunk to recall much of what I've said. Which, come to think of it, is probably just as well, judging by the way people who are normally quite sensible dissolve into gibbering, rude, opinionated and bombastic idiots once the alcohol molecules in their bloom-stream outnumber the neutrons, or whatever. Luckily, one only notices this if one stays sober oneself, so the solution is as pleasant (at the time, at least) as it is obvious.”

“…[Changers] were a threat to identity, a challenge to the individualism even of those they were never likely to impersonate. It had nothing to do with souls or physical or spiritual possession; it was, as the Idirans well understood, the behavouristic copying of another which revolted. Individuality, the thing which most humans held more precious than anything else about themselves, was somehow cheapened by the ease with which a Changer could ignore it as a limitation and use it as a disguise.”

“People were always sorry. Sorry they had done what they had done, sorry they were doing what they were doing, sorry they were going to do what they were going to do; but they still did whatever it is. The sorrow never stopped them; it just made them feel better. And so the sorrow never stopped.”