Modern Western though has been shaped by emphasis on scientific thinking and reasoning from the time of Copernicus, Galileo and Newton. The scientific revolution gave birth to a new era of thought, in which observations were made to support an idea. This involved what man could prove through sense, not religion or superstition. Notable ancient Greek historians, philosophers and scientists, such as Thucydides, Socrates, Aristotle, and Hippocrates, laid down the seeds of modern Western thought. An ancient Greek writer who demonstrated modern scientific objectivity was Thucydides. Over time, this type of scientific objectivity has become a valuable tool of modern Western thought. Th