Constantly regard the universe as one living being, having one substance and one soul; and observe how all things have reference to one perception, the perception of this one living being; and how all things act with one movement; and how all things are the cooperating causes of all things which exist; observe too the continuous spinning of the thread and the contexture of the web.
16th Roman Emperor from 161 to 180 and Stoic philosopher
Marcus Aurelius Antoninus (26 April 121 – 17 March 180) was Roman emperor from 161 to 180 and a Stoic philosopher. He was the last of the rulers known as the Five Good Emperors (a term coined some 13 centuries later by Niccolò Machiavelli), and the last emperor of the Pax Romana (27 BC to 180), an age of relative peace and stability for the Roman Empire. He served as Roman consul in 140, 145, and 161.
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Because most of what we say and do is not essential. If you can eliminate it, you'll have more time, and more tranquillity. Ask yourself at every moment, “Is this necessary?” But we need to eliminate unnecessary assumptions as well. To eliminate the unnecessary actions that follow. (Hays translation)
Ὀλίγα πρῆσσε, φησίν, εἰ μέλλεις εὐθυμήσειν
Πᾶν μοι συναρμόζει ὃ σοὶ εὐάρμοστόν ἐστιν, ὦ κόσμε· οὐδέν μοι πρόωρον οὐδὲ ὄψιμον ὃ σοὶ εὔκαιρον. πᾶν μοι καρπὸς ὃ φέρουσιν αἱ σαὶ ὧραι, ὦ φύσις· ἐκ σοῦ πάντα, ἐν σοὶ πάντα, εἰς σὲ πάντα. ἐκεῖνος μέν φησιν·
Does anything genuinely beautiful need supplementing? No more than justice does—or truth, or kindness, or humility. Are any of those improved by being praised? Or damaged by contempt? Is an emerald suddenly flawed if no one admires it? Or gold, or ivory, or purple? Lyres? Knives? Flowers? Bushes? (Hays translation)