The Book of Masks, written by Remy de Gourmont, is a collection of essays in which the author reflects on the nature and meaning of expressive art. Gurmon explores themes of identity, subjectivity, and disguise through literature, art, and philosophy. Each text in the book is a kind of "mask" under which various ideas and thoughts are hidden. The author provokes the reader to think about the extent to which we all hide our true essence under various images and roles in society. "The Book of Masks" is an important philosophical and literary work that encourages one's own self-knowledge and understanding of the human being.