Think about the religion that Justinian was promoting. Check this site.
http://en.wikipedia.org/wiki/Justinian_I#Religious_activities
Why does Emperor Justinian outlaw Greek Philosophy in 529 AD?????
5 answers
Oh, so he thought it was heretic to the Church
Yes. Justinian was promoting Christianity. The Greek philosophers, especially at the Athenian school were teaching what Justinian considered heretical to Christian teachings.
Thank you very much
You're very welcome.