This book is written for the world of students. These students are transforming their social thought into helpful living. In this book, any seriously-minded person should find a fundamental background for understanding the central theme of human progress, a substantial basis for attacking the most important problems of the day, and a call to renew his faith in the soundness of human aspirations. In as much as this treatise is written for students, it is not intended to be the last word on the subject, but simply a first word. The theme of each chapter is in itself a subject for turther investigation. In fact, an attentive student will find in each chapter marry topics concerning which he will want to learn more. If the thoughts mentioned in this book stimulate the students to make inquiries on their own, they will have accomplished more than the author co uld have expected.