Mathematicians, An Outer View of the Inner World, is an irresistible book. It consists of ninety-two positively stunning portraits by Mariana Cook (evidently the last pupil (or protégé) of Ansel Adams) accompanied by brief introspective essays by her subjects on the facing pages...The choice of subjects is outstanding; almost everyone in the mathematical world has met or corresponded with at least some of these representative scholars, and many among the latter are household words. So it is that the personal reflections accompanying the marvelous photographic portraits more often than not come across as chats with friends...This is much more than a coffee-table book." - Michael Berg, MAA Review