This book sheds new light on the life and work of Janusz Korczak, the twentieth century humanist moral educator and path-breaking social-pedagogue who is generally unknown in the English speaking world. In the two orphanages he led in Warsaw, Poland Korczak developed an innovative array of educational practices that motivated children from broken families suffering from serious social-interpersonal pathologies to re-form themselves during the five to seven years they lived in the orphanage. By offering its readers a systematic presentation of Korczak's worldview, educational philosophy and work, and exposing them to a rich selection of his writings, this book seeks to inform the English speaking educated public about an educator who unceasingly strived to make the world a better place for people and to make better people for the world.