An intimate exploration of inspiration and creativity, from the "parfumeur exclusif" of the house of Hermes. A scent has incantatory powers, capable of transporting you to your past, of kindling fantasies, of creating a vivid mise en scene—literally out of thin air. In the hands of the truly great, perfume creation is a kind of alchemy. Where does inspiration for this visceral art come from? How does one capture the essence of emotions, of desire? Jean-Claude Ellena has a sublime gift. As "parfumeur exclusif" (or "the nose") for Hermes, he elevates fragrance to an art form. A "writer of perfume," his concoctions are as finely composed and evocative as a haiku. He is also a conjurer of sorts: "I create an illusion that is actually stronger than reality . . . you enter the scent and follow the path." The Diary of a Nose is a collection of Ellena’s meditations on the world of scents, and what stirs his creation of some of the world’s most desired fragrances. Inspiration can come from...