Endless time behind, endless ahead. Three days or three lifetimes: no difference.

The source

"Endless time behind, endless ahead. Three days or three lifetimes: no difference." Marcus Aurelius said it in Meditations 4.50. Translated from the original Greek by Spartan Surfers.

"βλέπε γὰρ ὀπίσω τὸ ἀχανὲς τοῦ αἰῶνος καὶ τὸ πρόσω ἄλλο ἄπειρον. ἐν δὴ τούτῳ τί διαφέρει ὁ τριήμερος τοῦ τριγερηνίου;"

Original Greek, Meditations 4.50. 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 "Endless time behind, endless ahead. Three days or three lifetimes: no difference."?

Marcus Aurelius (121–180 AD). Source: Meditations 4.50.

What is the original Greek?

βλέπε γὰρ ὀπίσω τὸ ἀχανὲς τοῦ αἰῶνος καὶ τὸ πρόσω ἄλλο ἄπειρον. ἐν δὴ τούτῳ τί διαφέρει ὁ τριήμερος τοῦ τριγερηνίου;. Translated from the original Greek by Spartan Surfers.