Any theory which causes solipsism to seem just as likely an explanation for the phenomena it seeks to describe ought to be held in the utmost suspicion.

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.

The truth is not always useful, not always good. It’s like putting your faith in water. Yes, we need the rain, but too much can sweep you away in a flood and drown you. Like all great natural, elemental forces, the truth needs to be channeled, managed, controlled and intelligently, morally allocated.

Writing is like everything else: the more you do it the better you get. Don't try to perfect as you go along, just get to the end of the damn thing. Accept imperfections. Get it finished and then you can go back. If you try to polish every sentence there's a chance you'll never get past the first chapter.

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.

There has seldom if ever a shortage of eager young males prepared to kill and die to preserve the security, comfort and prejudices of their elders, and what you call heroism is just an expression of this simple fact; there is never a scarcity of idiots.

I just took [my cancer diagnosis] as bad luck, basically. It did strike me almost immediately, my atheist sort of thing kicked in and I thought "ha, if I was a God-botherer, I'd be thinking, why me God? What have I done to deserve this?" and I thought at least I'm free of that, at least I can simply treat it as bad luck and get on with it.