I will love you for ever, whatever happens. Till I die and after I die, and when I find my way out of the land of the dead I'll drift about forever, all my atoms, till I find you again.

My books are about killing God.

There are some who live by every rule and cling tightly to their rectitude because they fear being swept away by a tempest of passion, and there are others who cling to the rules because they fear that there is no passion there at all, and that if they let go they would simply remain where they are, foolish and unmoved; and they could bear that least of all. Living a life of iron control lets them pretend to themselves that only by the mightiest effort of will can they hold great passions at bay.

I thought physics could be done to the glory of God, till I saw there wasn’t any God at all and that physics was more interesting anyway. The Christian religion is a very powerful and convincing mistake, that’s all.

I told him I was going to betray you, and betray Lyra, and he believed me because I was corrupt and full of wickedness; he looked so deep I felt sure he'd see the truth. But I lied too well. I was lying with every nerve and fiber and everything I'd ever done...I wanted him to find no good in me, and he didn't. There is none.

I feel with some passion that what we truly are is private, and almost infinitely complex, and ambiguous, and both external and internal, and double- or triple- or multiply natured, and largely mysterious even to ourselves; and furthermore that what we are is only part of us, because identity, unlike "identity", must include what we do. And I think that to find oneself and every aspect of this complexity reduced in the public mind to one property that apparently subsumes all the rest ("gay", "black", "Muslim", whatever) is to be the victim of a piece of extraordinary intellectual vulgarity.

You cannot change what you are, only what you do.