Marcus AureliusMarcus Aurelius (121180 CE), Roman emperor and Stoic philosopher, born at Rome, received training under his guardian and uncle emperor Antoninus Pius (reigned 138161), who adopted him. He was converted to Stoicism and henceforward studied and practised philosophy and law. A gentle man, he lived in agreement and collaboration with Antoninus Pius. He married Pius's daughter and succeeded him as emperor in March 161, sharing some of the burdens with