Who said "Look within."?

Marcus Aurelius (121–180 AD). Source: Meditations 6.3.

What is the original Greek?

Ἔσω βλέπε· μηδενὸς πράγματος μήτε ἡ ἰδία ποιότης μήτε ἡ ἀξία παρατρεχέτω σε. Translated from the original Greek by Spartan Surfers.

ΕΣΩ ΒΛΕΠΕ

Marcus Aurelius, Meditations 6.3

"Look within." Marcus Aurelius said it in Meditations 6.3. Translated from the original Greek by Spartan Surfers.

"Ἔσω βλέπε· μηδενὸς πράγματος μήτε ἡ ἰδία ποιότης μήτε ἡ ἀξία παρατρεχέτω σε."

Original Greek, Meditations 6.3. Greek: Leopold 1908 (Teubner) via Perseus.

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

Who said "Look within."?: Marcus Aurelius (121–180 AD). Source: Meditations 6.3.
What is the original Greek?: Ἔσω βλέπε· μηδενὸς πράγματος μήτε ἡ ἰδία ποιότης μήτε ἡ ἀξία παρατρεχέτω σε. Translated from the original Greek by Spartan Surfers.