Marcus Aurelius (121 AD -180 AD) was the last of the Five Good Emperors of the ancient Roman empire. He reigned as the last emperor of the Pax Romana, during which the Roman empire and its citizens enjoyed relative stability and wealth.
Many, if not all, of his quotes that we see nowadays -- including the ones that we're using on our coffee mug designs below -- come from his book Meditations (this book is available for download for free at Gutenberg.) This "book" is actually a series of the emperor's personal notes on Stoicism. Being of personal nature, the collection of notes had no title.
Anyway, if you would like to be inspired by the famous philosopher emperor, here are some Marcus Aurelius mugs which feature some of his most inspiring quotes about happiness, mindfulness, and life in general.