Preface; Part I. Who Are Mathematicians?: Foreword to Who Are Mathematicians?; 1. Mathematicians and mathematics Michael Aschbacher; 2. What are mathematicians really like? Observations of a spouse Pamela Aschbacher; 3. Mathematics: arts and science Michael Atiyah; 4. A mathematician's survival guide Peter G. Casazza; 5. We are different Underwood Dudley; 6. The naked lecturer T. W. Körner; 7. Through a glass darkly Steven G. Krantz; 8. What's a nice guy like me doing in a place like this? Alan H. Schoenfeld; 9. A mathematician's eye view Ian Stewart; 10. I am a mathematician V. S. Varadarajan; Part II. On Becoming a Mathematician: Foreword to On Becoming a Mathematician; 11. Mathematics and teaching Hyman Bass; 12. Who we are and how we got that way? Jonathan M. Borwein; 13. Social class and mathematical values in the USA Roger Cooke; 14. The badly taught high school calculus lesson and the mathematical journey it led me to Keith Devlin; 15. The psychology of being a mathematician Sol Garfunkel; 16. Dynamics of mathematical groups Jane Hawkins; 17. Mathematics, art, civilization Yuri I. Manin; 18. Questions about mathematics Harold R. Parks; 19. A woman mathematician's journey Mei-Chi Shaw; Part III. Why I Became a Mathematician: Foreword to Why I Became a Mathematician; 20. Why I became a mathematician: a personal account Harold P. Boas; 21. Why I became a mathematician? Aline Bonami; 22. Why I am a mathematician John P. D'Angelo; 23. Why I am a mathematician Robert E. Greene; 24. Why I am a mathematician Jenny Harrison; 25. Why I became a mathematician Rodolfo H. Torres.