Who said "Don't let your tongue outrun your mind."?

Chilon (8th–4th century BC). Source: Diogenes Laertius 1.70.

What is the original Greek?

τὴν γλῶτταν μὴ προτρέχειν τοῦ νοῦ. Translated from the original Greek by Spartan Surfers.

Don't let your tongue outrun your mind.

Chilon, Diogenes Laertius 1.70

The source

"Don't let your tongue outrun your mind." Chilon said it in Diogenes Laertius 1.70. Translated from the original Greek by Spartan Surfers.

"τὴν γλῶτταν μὴ προτρέχειν τοῦ νοῦ."

Original Greek, Diogenes Laertius 1.70. Greek: Hicks 1925 Loeb text via Perseus.

Who said it

The Spartans (8th–4th century BC). Laconic sayings from Lycurgus, Leonidas, Dienekes and the mothers of Sparta, recorded by Herodotus and Plutarch.

Questions

Who said "Don't let your tongue outrun your mind."?: Chilon (8th–4th century BC). Source: Diogenes Laertius 1.70.
What is the original Greek?: τὴν γλῶτταν μὴ προτρέχειν τοῦ νοῦ. Translated from the original Greek by Spartan Surfers.