The basic definition of the word philosophy is, as an intellectual discipline, the study of ethics, metaphysics, physics, the science of knowledge, logic, and politics (Hallsall). A philosopher was an individual who made original contributions, not an individual who knew and discussed the works of philosophers. A goal of many philosophers in the ancient world was to tie ethics, metaphysics, physics, the science of knowledge, logic, and politics together so that one's theory of knowledge determined one’s understanding of the universe, and

individuals understanding of the universe affected how one acted (Hallsall). In the modern era, for the most part, philosophers tend to concentrate on one or two aspect

Greek philosophers were very different in their views in things, but agreed in many. Philosophy is a controversial topic because of the diverse areas covered, physics, metaphysics, ethics, and politics. Aristotle was the main player in ancient Greece, but many argued with him about everything. Plato fell along the same lines, especially when he wrote Republic. The philosophy of the ancient Greeks has survived the test of time, and continues to affect the lives of everyday people

Logic, how people validated arguments, presided over most scientific beliefs. One of the questions that the ancient Greeks could not grasp was that of voids. The questions of the ancients were voiced even louder with the discovery that where there seems to be nothing, there is air. That is an example of the confusing mix of logic and observation, which was common. One might say, there is the void;

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