No printed sources exist for this prior to 2009, and this seems to have been an attribution which arose on the internet, as indicated by web searches and rationales provided at "Marcus Aurelius and source checking" at Three Shouts on a Hilltop (14 June 2011) http://threeshoutsonahilltop.blogspot.com/2011/06/marcus-aurelius-and-source-checking.html
This quote may be a paraphrase of Meditations, Book II:
Since it is possible that thou mayest depart from life this very moment, regulate every act and thought accordingly.
But to go away from among men, if there are gods, is not a thing to be afraid of, for the gods will not involve thee in evil;
but if indeed they do not exist, or if they have no concern about human affairs, what is it to me to live in a universe devoid of gods or devoid of Providence?
But Gods there are, undoubtedly, and they regard human affairs; and have put it wholly in our power, that we should not fall into what is truly evil
Misattributed
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Bob Dylan 523
American singer-songwriter, musician, author, and artist 1941Related quotes
“To have a good memory the first thing you have to do is to trust your memory.”
Jesse W. M. DuMond, Paul Sophus Epstein http://www.nap.edu/openbook.php?record_id=568&page=147, in Biographical Memoirs V.45, National Academy of Sciences (NAS), published by National Academies Press (1974), ISBN 0-309-02239-8, p. 140
“Preserve your memories, keep them well, what you forget you can never retell.”
“To be in your children's memories tomorrow,
You have to be in their lives today.”
On leaving the music business in 1979,in an interview with CBS News Sunday Morning (12 August 2007) http://www.cbsnews.com/stories/2006/11/30/sunday/main2221286.shtml
Context: A lot of people would have loved me to keep singing … You come to a point where you have sung, more or less … your whole repertoire and you want to get down to the job of living. You know, up until that point, I hadn't had a life. I'd been searching, been on the road.