Perhaps some particles move backward in time; perhaps the future affects the past in some way we don’t understand; or perhaps the universe is simply … - Philip Pullman

Will moved on grimly, screwing up his eyes against the glare, ignoring the worsening pain from his hand, and finally reaching a state in which movement alone was good and stillness bad, so that he suffered more from resting than from toiling on. And since the failure of the witches' spell to stop his bleeding, he thought they were regarding him with fear, too, as if he was marked by some curse greater than their own powers.

I knew I was telling a story that would be gripping enough to take readers with it, and I have a high enough opinion of my readers to expect them to take a little difficulty in their stride. My readers are intelligent: I don't write for stupid people. Now mark this carefully, because otherwise I shall be misquoted and vilified again — we are all stupid, and we are all intelligent. The line dividing the stupid from the intelligent goes right down the middle of our heads. Others may find their readership on the stupid side: I don't. I pay my readers the compliment of assuming that they are intellectually adventurous.

I stopped believing there was a power of good and a power of evil that were outside us. And I came to believe that good and evil are names for what people do, not for what they are.