It is difficult enough to live as we ought to live, difficult even for any man to live in such a way as to satisfy himself, if he exercises only in a moderate degree the power of reflecting upon and reviewing his own conduct
 Marcus Aurelius, Meditations (c. 170 - 180). copy citation

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Author Marcus Aurelius
Source Meditations
Topic power living
Date c. 170 - 180
Language English
Reference
Note Translated by George Long
Weblink https://www.gutenberg.org/files/15877/15877-h/15877-h.htm

Context

“and if we discover imperfections in their teaching, we must still honor these great men who attempted to show that there is in man's nature and in the constitution of things sufficient reason for living a virtuous life. It is difficult enough to live as we ought to live, difficult even for any man to live in such a way as to satisfy himself, if he exercises only in a moderate degree the power of reflecting upon and reviewing his own conduct; and if all men cannot be brought to the same opinions in morals and religion, it is at least worth while to give them good reasons for as much as they can be persuaded to accept. [A] J. Smith in his Select Discourses on "the Excellency and Nobleness of True Religion"” source