The Mathematics of Infinity: A Guide to Great Ideas (Pure and Applied Mathematics: A Wiley Series of Texts, Monographs and Tracts)
"…an enchanting book for those people in computer science or mathematics who are fascinated by the concept of infinity." (Computing Reviews.com, May 25, 2007)"…a very well written introduction to set theory…easy to read and well suited for self-study…highly recommended." (CHOICE, February 2007)