Gregory Maguire said this quote

Secrets are revealed as you are ready to understand them. It seems capricious and mean-spirited of the Grimmerie to hold back, to yield and then to tease with a single page – but then the world is the same way, isn’t it. The world rarely shrieks its meaning at you. It whispers, in private language and obscure modalities, in arcane and quixotic imagery, through symbol systems in which every element has multiple meanings determined by juxtaposition.