It does not make sense. It cannot exist. It's impossible, and if it isn't impossible, it's irrelevant, and if it isn't either of those things, it's e… - Philip Pullman

I have said that His Dark Materials is not fantasy but stark realism, and my reason for this is to emphasise what I think is an important aspect of the story, namely the fact that it is realistic, in psychological terms. I deal with matters that might normally be encountered in works of realism, such as adolescence, sexuality, and so on; and they are the main subject matter of the story – the fantasy (which, of course, is there: no-one but a fool would think I meant there is no fantasy in the books at all) is there to support and embody them, not for its own sake.

Dæmons, for example, might otherwise be only a meaningless decoration, adding nothing to the story: but I use them to embody and picture some truths about human personality which I couldn't picture so easily without them. I'm trying to write a book about what it means to be human, to grow up, to suffer and learn. My quarrel with much (not all) fantasy is it has this marvelous toolbox and does nothing with it except construct shoot-em-up games. Why shouldn't a work of fantasy be as truthful and profound about becoming an adult human being as the work of George Eliot or Jane Austen?

"[I]n adult literary fiction, stories are there on sufferance. Other things are felt to be more important: technique, style, literary knowingness. Adult readers who do deal in straightforward stories find themselves sidelined into a genre such as crime or science fiction, where no one expects literary craftsmanship. But stories are vital. Stories never fail us, because, as Isaac Bashevis Singer says, "events never grow stale." There's more wisdom in a story than in volumes of philosophy. [Contemporary writers, however,] take up their stories as with a pair of tongs. They're embarrassed by them. If they could write novels without stories in them, they would. Sometimes they do."

She couldn't get any further at that point. The sky full of stars seemed dead and cold, everything in it the result of the mechanical, indifferent interactions of molecules and particles that would continue for the rest of time whether Lyra lived or died, whether human beings were conscious or unconscious: a vast silent empty indifference, all quite meaningless.
Reason had brought her to this state. She had exalted reason over every other faculty. The result had been - was now - the deepest unhappiness she had ever felt.