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Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar
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detail from School of Athens by Raphael
John Locke
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David Hume
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Key People

Aristotle
Aristotle
Greek philosopher
Socrates
Socrates
Greek philosopher
John Locke
John Locke
English philosopher
David Hume
David Hume
Scottish philosopher
Philo Judaeus
Philo Judaeus
Jewish philosopher