Dhp 157-159 · Self
If a man hold himself dear, let him watch himself carefully; during one at least out of the three watches a wise man should be watchful. Let each man direct himself first to what is proper, then let him teach others; thus a wise man will not suffer. If a man make himself as he teaches others to be, then, being himself well subdued, he may subdue (others); one's own self is indeed difficult to subdue.