Daisaku Ikeda 
Heart of the Lotus Sutra [PDF ebook] 

The Lotus Sutra has been regarded for centuries as one of the most important teachings in Mahayana Buddhism. This book goes beyond theory to show how to bring these teachings into practice in daily life. Containing profound truths for all people from every culture, it reveals the secret for attaining happiness for both oneself and others through the process of self-reformation. Based on the teachings of Nichiren, a 13th-century Buddhist teacher and reformer, the scriptures of the Lotus Sutra show how every person can attain Buddhahood.