In this volume honoring Nambu's memory, World Scientific Publishing presents a unique collection of papers written by his former colleagues, collaborate researchers and former students and associates, not only citing Nambu's great contributions in physics but also many personal and private reminiscences never told before. From the Contents: Effective Field Theory, Past and Future (Steven Weinberg); Nambu-Goldstone Theorem and Spin-Statistics Theorem (Kazuo Fujikawa); Appendix: Reminiscences of the Youthful Years of Particle Physics (Y Nambu).