From award-winning creators Matthew Burgess and Matthew Forsythe comes a new picture book classic and an invitation to imaginative dreaming.    If the Moon is the perfect lyrical bedtime book—a visual poem that soothes and smooths the transition from waking to sleeping. If the Earth and if the moon, if the whistling of a tune. If you drift, if you dream, into space, into streams… Softly step on tender feet, come and lift the latch of sleep.