In this interview J. P. Ostriker discusses topics such as: his educational background; Harvard University and the University of Chicago; working with Subrahmanyan Chandrasekhar; W. W. Morgan; University of Cambridge; Princeton University; Lyman Spitzer; Donald Lynden-Bell; early computer programming; astrophysics; stellar structure and stellar dynamics; Fred Hoyle; white dwarf stars; Peter Bodenheimer; James Gunn; pulsars; Martin Schwarzschild; cosmic rays; P. J. E. Peebles; Roger Blandford; cosmic background radiation; Geoffrey and E.