Iorek Byrnison: Can is not the same as must. Lyra Silvertongue: But if you must and you can, then there's no excuse.
Philip PullmanWe shouldn't live as if [other worlds] mattered more than this life in this world, because where we are is always the most important place.
Philip PullmanWhen you choose one way out of many, all the ways you don't take are snuffed out like candles, as if they'd never existed. At that moment all Will's choices existed at once. But to keep them all in existence meant doing nothing. He had to choose, after all.
Philip Pullman