Justinian closes the Academy

An imperial edict ends the teaching of pagan philosophy at Athens. Damascius and six colleagues travel to the court of Khosrow I in Persia, find it not to their taste, and negotiate a safe return under treaty.

The end of the institution and not of the ideas — which by then were already moving east in Syriac and into Christendom under an apostle's borrowed name. Traditions survive by leaving.