Attributed to Marcus Aurelius

«The happiness of your life depends upon the quality of your thoughts.»
Misattributed

Verdict

It is not in Marcus Aurelius's work

A modern paraphrase, not a literal quotation, of Meditations V.16 ("the soul is dyed by the thoughts"). The original passage should be quoted instead.

Source: Marco Aurelio. Τὰ εἰς ἑαυτόν (Meditaciones). Texto griego en Wikisource en griego; trad. inglesa de George Long, The Thoughts of the Emperor Marcus Aurelius Antoninus (Londres, 1862), en Wikisource en inglés.

What they did say

Verified words of Marcus Aurelius

«Begin the morning by saying to thyself, I shall meet with the busybody, the ungrateful, arrogant, deceitful, envious, unsocial.»
Meditaciones II 1. Griego: Wikisource; inglés: George Long (1862); español: traducción propia.
«Of human life the time is a point, and the substance is in a flux.»
Meditaciones II 17. Griego: Wikisource; inglés: George Long (1862); español: traducción propia.
«It is in thy power whenever thou shalt choose to retire into thyself. For nowhere either with more quiet or more freedom from trouble does a man retire than into his own soul.»
Meditaciones IV 3. Griego: Wikisource; inglés: George Long (1862); español: traducción propia.

All verified quotes