Thou Shalt Not is soon forgotten, but Once Upon a Time is forever. - Philip Pullman

"Religion is, as I say, something universal and something human, and something impossible to eradicate, nor would I want to eradicate it. I am a religious person, although I am not a believer.

Religion is at its best when it is a long way from political power. The founder of the Christian religion — or, the founders of the Christian religion, Jesus and St. Paul — were both clear about this. "Blessed are the meek." "You shall love your neighbor as yourself." St. Paul is perfectly clear that the highest Christian virtue is charity, not patriotism, not martial valor, not exalting your class, your group, your race above others, but charity. That's the highest virtue. When religion remembers that and acts accordingly, it does good.

But religion, at various points in human history, notably the history of western Europe and the history of some parts of the Middle East more recently, has acquired political power, and put its hands on the levers of social authority. It decides who shall live and who shall die. It decides how we shall dress, what we shall be allowed to read, whether we shall go to war, and so on. When religion acquires that power, it goes bad very rapidly."

All these tattered old bits and pieces have a history and a meaning. A group of them together can seem like the traces left by an ionizing particle in a bubble chamber: they draw the line of a path taken by something too mysterious to see. That path is a story, of course. What scientists do when they look at the line of bubbles on the screen is work out the story of the particle that made them: what sort of particle it must have been, and what caused it to move in that way, and how long it was likely to continue. Dr. Mary Malone would have been familiar with that sort of story in the course of her search for dark matter. But it might not have occurred to her, for example, when she sent a postcard to an old friend shortly after arriving in Oxford for the first time, that that card itself would trace part of a story that hadn't yet happened when she wrote it. 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 more aware than we are. There are many things we haven't yet learned how to read. The story in this book is partly about that very process.

And then what?" said her Dæmon sleepily "build what?"
"The Republic of Heaven.