"You told me that the children of the forest had the greensight. I remember." "Some claimed to have that power. Their wise men were called greenseers." "Was it magic?" "Call it that for want of a better word, if you must. At heart it was only a different sort of knowledge." Oh, to be sure, there is much we do not understand. The years pass in their hundreds and their thousands, and what does any man see of life but a few summers, a few winters? We look at mountains and call them eternal, and so they seem . . . but in the course of time, mountains rise and fall, rivers change their courses, stars fall from the sky, and great cities sink beneath the sea. Even gods die, we think. Everything changes. So long as there was magic, anything could happen. Ghosts could walk, trees could talk, and broken boys could grow up to be knights."