Internationally recognized Colombian artist Daniel Liévano uses visual notations to explore philosophical ideas in Gravity & Other Substances, a picture book for teens and adults. Through various media, artist Daniel Liévano has dedicated himself to exploring the relationship between abstraction and storytelling. Here, he takes up happiness, truth, memories, reality, dreams, and gravity. In many ways, these concepts shape the rhythms, experiences, and facts of human life. Conceiving of them as substances, Liévano explores them as if they were tangible, solid presences in our lives. In doing so, he makes happiness subject to gravity and memory both molecular and embodied. The exploration that makes up Gravity & Other Substances is published under Unruly, Enchanted Lion's imprint of category-defying picture books for teens and adults.