More quotes by Marcus Aurelius, Meditations

"No man is happy who does not think himself so."
"From the philosopher Catulus, never to be dismissive of a friend's accusation, even if it seems unreasonable, but to make every effort to restore the relationship to its normal condition."
"The happiness of your life depends upon the quality of your thoughts."
"What we cannot bear removes us from life; what remains can be borne."
"The happiness of your life depends upon the quality of your thoughts: therefore, guard accordingly, and take care that you entertain no notions unsuitable to virtue and reasonable nature."