
Leo VI Sophos, called the Wise or the Philosopher (Greek: Λέων ὁ Σοφός, romanized: Leōn ho Sophos, 19 September 866 – 11 May 912), was Byzantine Emperor from 886 to 912. The second ruler of the Macedonian dynasty (although his parentage is unclear), he was very well-read, leading to his epithet. During his reign, the renaissance of letters, begun by his predecessor Basil I, continued; but the Empire also saw several military defeats in the Balkans against Bulgaria and against the Arabs in Sicily and the Aegean. His reign also witnessed the formal discontinuation of several ancient Roman institutions, such as the Roman consul and Senate (in this period also known as the Byzantine Senate), which continued to exist in name only and lost much of their original functions and powers.