The world cannot do without the sun. Without the sun, darkness would envelop everything. The world cannot do without clouds. Without clouds, how could the stars find their little quilts and the moon find her little pillow? The world cannot do without winds. Without winds, where could the baby flowers go to have fun? … The world cannot do without me, without you or without him …. This is a brand new picture book by the celebrated elder artist Cai Gao. It is a picture book filled with childlike innocence, poetic charm and philosophical thoughts, a poem featuring purity, simplicity and strength. Through children's wondering questions and the magic of everyday existence—sun, clouds, wind—it reveals how young minds map the universe in tender, profound ways.