Who said "More disciplined than Zeno."?

Greek proverb. Source: Diogenes Laertius 7.27.

What is the original Greek?

τοῦ φιλοσόφου Ζήνωνος ἐγκρατέστερος. Translated from the original Greek by Spartan Surfers.

More disciplined than Zeno.

Greek proverb, Diogenes Laertius 7.27

The source

"More disciplined than Zeno." This Greek proverb is recorded in Diogenes Laertius 7.27. Translated from the original Greek by Spartan Surfers.

"τοῦ φιλοσόφου Ζήνωνος ἐγκρατέστερος."

Original Greek, Diogenes Laertius 7.27. Greek: Hicks 1925 Loeb text via Perseus; A saying that became proverbial in Athens.

Who said it

Proverbs of the world (Every age). Sayings from the Latin, Greek, Norse, Japanese, Chinese and more, each traced to an old source in its own language.

Questions

Who said "More disciplined than Zeno."?: Greek proverb. Source: Diogenes Laertius 7.27.
What is the original Greek?: τοῦ φιλοσόφου Ζήνωνος ἐγκρατέστερος. Translated from the original Greek by Spartan Surfers.