Nearly every tale that men tell of magic and witches and such is born out of foolishness and ignorance and sickness of mind—or is a way of explaining… - Susan Cooper

At the very heart, that is. Other things, like humanity, and mercy, and charity, that most good men hold more precious than all else, they do not come first for the Light. Oh, sometimes they are there; often, indeed. But in the very long run the concern of you people is with the absolute good, ahead of all else. You are like fanatics. Your masters, at any rate. Like the old Crusaders—oh, like certain groups in every belief, though this is not a matter of religion, of course. At the centre of the Light there is a cold white flame, just as at the centre of the Dark there is a great black pit bottomless as the Universe.

Each wave of men in turn grew peaceful as it grew to know and love the land, so that the Light flourished again. But always the Dark was there, swelling and waning, gaining a new Lord of the Dark whenever a man deliberately chose to be changed into something more dread and powerful than his fellows. Such creatures were not born to their doom, like the Old Ones, but chose it.

All knowledge is sacred, but it should not be secret.