This biographical collection offers in-depth, essay-format profiles of 27 iconic figures of 'unbelief,' intellectuals who have advocated for atheism, agnosticism, or secularism, from the historical . . . to the contemporary. . . This is an excellent starting point for research and paper writing, but the casual reader will find the book engaging as well. This reviewer was caught up in the content and found the profiles to be well written, clearly presented, and very informative. . . . This set is recommended for public, high school, and academic libraries.