In Ariana Huffington’s new book, “Thrive,” an old concept is being made new again; that nothing in the outside world is the key to our peace. Great leaders of the past, like Marcus Aurelius, and countless others, wrote their version of this wisdom for their own generations to follow.
http://www.dailygood.org/story/680/marcus-aurelius-and-the-key-to-happiness-carolyn-gregoire/