This book newly released in ebook form, delves into the fundamental spirit of the Soka Gakkai’s movement for human happiness and world peace. Daisaku Ikeda offers five lectures, one on each of the Soka Gakkai’s five eternal guidelines. The first three, Faith for a Harmonious Family, Faith for Achieving Happiness, and Faith for Overcoming Obstacles, were established by second Soka Gakkai President Josei Toda shortly before he passed away. Several years later, the fourth and fifth guidelines, Faith for Health and Long Life and Faith for Absolute Victory, were established by Daisaku Ikeda. In this book, SGI President Ikeda address fundamental questions of Buddhism and life, such as, “What is Faith? What is its purpose? What kind of faith should we strive for to ensure our happiness?” President Ikeda provides a touchstone for all practitioners as we strive to attain Buddhahood and accomplish kosen-rufu.