Book 3 of Aristotle's Physics primarily concerns two important concepts for his theory of nature: change and infinity. Change is important because, in Book 2, he has defined nature - the subject-matter of the Physics - as an internal source of change. Much of his discussion is dedicated to showing that the change occurs in the patient which undergoes it, not in the agent which causes it. Thus Book 3 is an important step in clearing the way for Book 8's claims for a divine mover who causes change but in whom no change occurs. The second half of Book 3 introduces Aristotle's doctrine of infinity as something which is always potential, never actual, never traversed and never multiplied. Here, as elsewhere, Philoponus the Christian turns Aristotle's own infinity arguments against the pagan Neoplatonist belief in a beginningless universe. Such a universe, Philoponus replies, would involve actual infinity of past years already traversed, and a multiple number of past days. The commentary also contains intimations of the doctrine of impetus - which has been regarded, in its medieval context, as a scientific revolution - as well as striking examples of Philoponus' use of thought experiments to establish philosophical and broadly scientific conclusions.

Philoponus: On Aristotle Physics 3 (Ancient Commentators on Aristotle)

Politics & Social Sciences

Edwards Dr, Professor of Early Christian Studies Mark

Philosophy

Bristol Classical Press

<p><p>Dr. Christopher Lemuel becomes a ship's doctor on a privateer to escape England, after shamefully killing a man in a matter of honor.nbsp;He is wounded in a sea battle, captured by pirates, and reluctantly becomes a buccaneer. But matters become really strange and then turn deadly when he is marooned on an island populated by enormous beasts unknown in natural history.</p> <div>nbsp;</div></p>

Pirates on Dinosaur Island (Gemma Open Door)

Science Fiction & Fantasy

Fantasy

Gemma Open Door

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Books by Edwards Dr, Professor of Early Christian Studies Mark