In "Teachers as Learners", a collection of landmark essays, noted teacher educator and scholar Sharon Feiman-Nemser shines a light on teacher learning. Arguing that serious and sustained teacher learning is a necessary condition for ambitious student learning, she examines closely how teachers acquire, generate, and use knowledge about teaching over the trajectory of their careers. Together, these essays bear witness to the evolution and development of a body of scholarship about teacher learning in which the author herself played a catalyzing role.