"The Letter of Othea to Hector; or, The Book of Chivalry" is the work of the famous French writer Christina de Pisan. This book is written in the form of a letter in which the goddess of wisdom Othea teaches the knight Hector about the ethical and moral principles of chivalry. In her work, Christina de Pisan discusses the concepts of honor, courage, loyalty, dignity and other qualities that true knights should have. This book is an important text of medieval literature and helps the modern reader to better understand the ethical standards and values of that time. Its importance lies in the elevation of the female voice and the important role that women played in medieval society.