You may or may not ever read On the Origin of Species, but Charles Darwin's lofty thoughts can stand on their own, as shown by these hundreds of quotations selected by his biographer Janet Browne. Drawing from Darwin's writings, letters to friends and family, reminiscences, and private scientific notebooks, the selections here form a de facto autobiography, taking into account the voyage of the Beagle, the development of his thoughts about evolution, his gradual loss of religious faith, and the time spent turning his ideas into a well-articulated theory about the natural origin of all living beings.