It is my great pleasure to receive an invitation from the Senior Venerable Thich Nguyen Tang to write an introduction for his new book. I don’t think that my very poor introduction will be sufficient for his book. Perhaps it could be unfair to his great endeavor - better delete it. However, I take this opportunity to express my sincere gratitude towards him. I stayed in his monastery for a short time, during which time I was so well treated by him as his own monastery brother. I write this introduction very happily, even it is poor, to offer him a tribute. On one hand, I consider it as my great obligation and on the other hand it is my privilege.