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Greek philosopher and scientist, he was a student of Plato who tutored Alexander the Great. He lived from 384-322 BC. He founded the Lyceum, a school in Athens.
This philosopher focused on the functionality of things—if things fulfilled their purpose, they were "good". The purpose of humans was to reach well-being, through habit, and by avoiding both excess and deficiency ("the golden mean"). Citizens could, through political acts, achieve this kind of well-being.
This philosopher fled Athens after Alexander's death, as anti-Macedonian sentiment in Athens grew.
Who is Aristotle?