The faults he detects in himself are often such as most men would have no eyes to see. To serve the divine spirit which is implanted within him, a man must 'keep himself pure from all violent passion and evil affection, from all rashness and vanity, and from all manner of discontent, either in regard of the gods or men'
 Marcus Aurelius, Meditations (c. 170 - 180). copy citation

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Author Marcus Aurelius
Source Meditations
Topic vanity passion
Date c. 170 - 180
Language English
Reference
Note Translated by Meric Casaubon
Weblink https://en.wikisource.org/wiki/Marcus_Aurelius_Antoninus_-_His_Meditatio...

Context

“he may not be profound, he is always sincere. And it is a lofty and serene soul which is here disclosed before us. Vulgar vices seem to have no temptation for him; this is not one tied and bound with chains which he strives to break. The faults he detects in himself are often such as most men would have no eyes to see. To serve the divine spirit which is implanted within him, a man must 'keep himself pure from all violent passion and evil affection, from all rashness and vanity, and from all manner of discontent, either in regard of the gods or men': or, as he says elsewhere, 'unspotted by pleasure, undaunted by pain.' Unwavering courtesy and consideration are his aims. 'Whatsoever any man either doth or saith, thou must be good;' 'doth any man offend?” source