This autobiographical odyssey seeks in places of great striving a “rational faith”—one true to both our highest religious ideas and our advancing sciences. As founder of both charitable and technical businesses, author David Sayre leads us to places of the greatest despair and the greatest power on earth. There we meet amazing examples of good and evil, interwoven with contemporary scientists’ own searches for meaning, explaining faith and love, truth and life, time and order and beauty. The things we hold sacred are real, after all.