If you held the belief, child, that I knew everything that hid under every stone and leaf, I must disappoint you. I may have my own understanding of how the art works, sharpened by long years of memory, but I do not know how it will work for you. There is a reason I call magic an art, rather than a science. I might guess, but in guessing too hastily I might influence, or even diminish, your talents—taint you with my predictions.
J Kelley Anderson, Casting Shadows [Amazon]