Thales Thales was a native of Miletus, in Asia Minor. He flourished in 585 BCE (the date of an eclipse he is reputed to have predicted). No fragments of his work have survived, only testimony. Aristotle attributes the following four views to Thales: 1.The earth rests on water. (De Caelo294a28) 2.Water is the archêof all things. (Metaph. 983b18) 3.The magnet has a soul. (De Anima405a19) 4.All things are full of gods. (De Anima411a7) This seems like a very bizarre collection of very strange views. What makes these views philosophically or scientifically interesting? We will begin with (1). It seems very likely that Thales was offering an hypothesis to explain a puzzling phenomenon: why are there earthquakes? If the earth floats on water, then we can understand what happens: the earth is rocked by the wave action of the water on which it floats like a boat or a log. (At this point we are more interested in seeing that this is an attempt at explanation than in evaluating it.) To understand (2) we need to examine its source. Archê
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