"Kaspar and Other Plays" is a collection of avant-garde, thought-provoking plays that explore deep philosophical questions about language, reality, and the human condition. The titular play tells the story of a young man who learns to speak and, in doing so, is manipulated and controlled by society. The other plays in the collection continue to challenge conventional ideas and push boundaries, offering a unique and profound commentary on the world.

This collection brings together a selection of dramatic works by a prominent figure in the early 20th-century literary world, showcasing his talent for blending poetic language with profound psychological insight. The plays and libretti included span various genres, from historical dramas to adaptations of classic myths, each marked by the author's exploration of themes such as identity, transformation, and the human condition. The works also reflect the author's collaboration with influential composers of his time, contributing to the evolution of opera and theater through his innovative approach to storytelling and character development.