Pray simply and freely, or don't pray at all.

The source

"Pray simply and freely, or don't pray at all." Marcus Aurelius said it in Meditations 5.7. Translated from the original Greek by Spartan Surfers.

"ἤτοι οὐ δεῖ εὔχεσθαι ἢ οὕτως ἁπλῶς καὶ ἐλευθέρως."

Original Greek, Meditations 5.7. Greek: Leopold 1908 (Teubner) via Perseus.

Who said it

Marcus Aurelius (121–180 AD). Roman emperor who wrote private notes to himself on a military campaign. We know them as the Meditations.

Questions

Who said "Pray simply and freely, or don't pray at all."?

Marcus Aurelius (121–180 AD). Source: Meditations 5.7.

What is the original Greek?

ἤτοι οὐ δεῖ εὔχεσθαι ἢ οὕτως ἁπλῶς καὶ ἐλευθέρως. Translated from the original Greek by Spartan Surfers.