The idea of writing this book was in my mind while I was interested in the study of Buddhism at Taisho University, Tokyo. Then I had a chance of studying in India as the Government of India Cultural Scholarship student in 1959, and joined the Department of Buddhist Studies, Delhi University. I studied the Buddhist scriptures written in Sanskrit, Pali and Tibetan. There were many names of Bhikkhus, Bhikkhunis, lay-followers, names of towns, mountains and rivers which I never had seen by my eyes. During my three years stay in India I visited almost all Buddhist excavated sights, read books and talked with scholars. I came to the conclusion that every sights, traditions, myths and even superstitions mentioned in those scriptures are true and real. The most impressive sight was a scene in Sutta Nipata "on the bank of River Mahi/I made a Hut to live Cow gave milk now/0 Heaven Give Us Rain." Just the same scene appeared before my eyes. At the foot of Himalaya Mountain I visited Lumbini, the scene was just the same as shown in the scripture. Nearly 70 years has passed. I visit India two to three times even now, but still I never forget my first visit. This book is the result of literal, archeological, epigraphical studies including Buddhist scriptures, puranas, itiluisas and Jaina materials.
Prof. Sato Ryojun is Prof. Emeritus of Taisho University in Tokyo, Japan, He also serves as: Chairman, Board of Director, Meisho Kindergarten, Tokyo; Chief priest, Koen-ji Temple, Tokyo; Member, Board of Counselors, International Buddhist Brotherhood Association, Bodh Gaya, India; Patron, Bengal Buddhist Association, Kolkata, India; Patron, International Brother-hood Mission, Assam, India.