Marcus Aurelius (/ɔːˈriːliəs/; Latin: Marcus Aurelius Antoninus Augustus; 26 April 121 – 17 March 180 AD) was Roman Emperor from 161 to 180. He ruled with Lucius Verus as co-emperor from 161 until Verus' death in 169. He was the last of the Five Good Emperors, and is also considered one of the most important Stoic philosophers.During his reign, the Empire defeated a revitalized Parthian Empire in the East: Aurelius' general Avidius Cassius sacked the capital Ctesiphon in 164.