If a coin comes down heads, that means that the possibility of its coming down tails has collapsed. Until that moment the two possibilities were equal. But on another world, it does come down tails. And when that happens, the two worlds split apart.

The first ghost to leave the world of the dead was Roger. He took a step forward, and turned to look back at Lyra, and laughed in surprise as he found himself turning into the night, the starlight, the air. . .and then he was gone, leaving behind such a vivid little burst of happiness.

We have to build the Republic of Heaven where we are, because for us there is no elsewhere.

A murderer was a worthy companion.

The intentions of a tool are what it does. A hammer intends to strike, a vise intends to hold fast, a lever intends to lift. They are what it is made for. But sometimes a tool may have other uses that you don't know. Sometimes in doing what you intend, you also do what the knife intends, without knowing.

Half a dozen brats turned with expressions of derision, and Lyra threw her cigarette down, recognizing the cue for a fight. Everyone's daemon instantly became warlike: each child was accompanied by fangs, or claws, or bristling fur, and Pantalaimon, contemptuous of the limited imaginations of these gyptian daemons, became a dragon the size of a deer hound.

I don't profess any religion; I don't think it's possible that there is a God.... My books are about killing God.