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  While working in this position, he also furthered his studies in theoretical medicine and philosophy.
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  It was here in court that Galen wrote extensively on medical subjects.
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  Galen was a prolific writer and is believed to have produced more work than any author.
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  Although he was more famous as a medical practitioner, Galen was also a renowned philosopher of his times. He wrote extensively about logic and philosophy, and integrated philosophical thought with medical practice.
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  "Galen." Famous Scientists.
famousscientists.org. 22 Dec. 2014. Web. 7/8/2018
<www.famousscientists.org/galen/>.