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hermias' death, aristotle was invited by philip of macedon to become tutor to alexander the great. after spending several years tutoring the young alexander, aristotle returned to athens. by b.c.e., he established his own school there, known as the lyceum. aristotle conducted courses at the school for
the most part, intended for widespread publication, and are generally thought to be mere lecture aids for his students. aristotle not only studied almost every subject possible at the time, but made significant contributions to most of them. in physical science, aristotle studied anatomy, astronomy,...
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