Let no act be done without a purpose, nor otherwise than according to the perfect principles of art.
 Marcus Aurelius, Meditations (c. 170 - 180). copy citation

add
Author Marcus Aurelius
Source Meditations
Topic art purpose
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

“but when the fire is strong, it soon appropriates to itself the matter which is heaped on it, and consumes it, and rises higher by means of this very material. [A] πρὸς τἁ ἡγούμενα, literally "towards that which leads." The exact translation is doubtful. See Gataker's note. 2. Let no act be done without a purpose, nor otherwise than according to the perfect principles of art. 3. Men seek retreats for themselves, houses in the country, sea-shores, and mountains; and thou too art wont to desire such things very much. But this is altogether a mark of the most common sort of men, for it is in thy power whenever thou shalt choose to retire into thyself.” source