The Basic Teachings of Happy Science: A Happiness Theory on Truth and Faith by Ryuho Okawa
"My first book was published in July 1 1985, and our office was established on October 6, 1986. In the nearly 30 years since, we have continued our activities to raise public awareness. With more than 2,100 lectures and 1,400 books published, for me it has been continues days of hard work, sacrificing my life."
Ryuho Okawa, Afterword