Peter Whitfield is an independent scholar and a leading expert in map history and exploration. He is a former director of Stanford's International Map Centre in London. His previous books include "The Image of the World "(1994), "The Mapping of the Heavens "(1995), "The Charting of the Oceans "(1996), "New Found Lands "(1998), "Landmarks in Western Science "(1999), "Astrology: A History "(2001), and "Sir Francis Drake "(2004).
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This is the foundation of all: that we are not to imagine or suppose, but to discover what nature does, or may be made to do.