In 1831, a young scientist began a voyage that would revolutionize science. Charles Darwin, on board the Beagle, left England on an expedition that lasted five years. For Fitzroy, the captain, Galápagos represented merely one more stop on the voyage, but for Darwin it was much more. Here he began to formulate a coherent idea about the evolution of species. In his words, “hence, both in space and time, we seem to be brought somewhat near to that great fact—that mystery of mysteries—the first appearance of new beings on this earth”. It was not until years later that he explained evolution (see Why Darwin Delayed), but Galápagos was always the source for his powerful intuition.