Even today, Meditations by Marcus Aurelius is read by every class from kings to common people. The book is a universal classic, meaning it can be related to at any time, by anyone. The philosophies included in his book have spanned the centuries, and Meditations remains to be one of the most influential books ever written. Marcus Aurelius was born on April 20, 121 AD into a family of royalty. His uncle and adoptive father, Antoninus Pius, was the emperor of Rome. Aurelius, too, was trained from birth to be a great ruler like his father. At age eleven, he dedicated himself to religion, although he considered philosophy to be the "true, inward" religion, one which did