This three-volume set of essays is dedicated to Alain Touwaide, known for his far-reaching investigations in fields such as ancient medicine, botany, pharmacy, texts and manuscripts, the classical tradition, translation, the history of science, ethnopharmacology, and plant therapies. The essays, penned by 80 international scholars and researchers and written in six languages, are grouped into three broad categories—Manuscripts, Plants, and Remedies—to reflect Alain’s main areas of research. Each category is broken into subgroups, such as manuscripts, texts, and science; botany; gardens, materia medica, pharmacy, drugs, archaeology, medical traditions, and continuity of scientific knowledge in the East and West. The papers reach across many fields of scholarship, science, and medicine and are, necessarily and fundamentally, trans-disciplinary, trans-chronological, and trans-geographic. These volumes are not so much a Festschrift as an approach to Alain’s work through many disciplines and methods, a discussion of the current status of each field, and an opening into new perspectives.