In his poetry, chemist Roald Hoffmann, the Frank H.T. Rhodes Professor of Humane Letters Emeritus at Cornell University, explores philosophy and science, weaving worlds of sound and meaning from the simple building blocks of words. In this April 2021 Chats in the Stacks talk about his latest book of poetry, “Constants of the Motion” (Dos Madres Press, 2020), Hoffmann, delves into personal experiences, including a desperate childhood shaped by the Holocaust and a search for consilience in the tranquil beauty of the Santa Cruz Mountains.