Mastery........................................

4.  The sinner sins against himself;  the wrongdoer wrongs himself, becoming worse by his own action.


5.  A man does not sin by commission only, but often by omission.


6.  Enough if your present opinion is grounded in conviction, your present action grounded in unselfishness, and your present disposition contented with whatever befalls you from without.


7.  Erase fancy; curb impulse; quench desire; let sovereign reason have the mastery,


-Marcus Aurelius,  Meditations,  Book IX