Who said "The most necessary skill: unlearning."?

Antisthenes (c. 446–366 BC). Source: Diogenes Laertius 6.7.

What is the original Greek?

ἐρωτηθεὶς τί τῶν μαθημάτων ἀναγκαιότατον, τὸ περιαιρεῖν, ἔφη, τὸ ἀπομανθάνειν. Translated from the original Greek by Spartan Surfers.

Antisthenes, Diogenes Laertius 6.7

"The most necessary skill: unlearning." Antisthenes said it in Diogenes Laertius 6.7. Translated from the original Greek by Spartan Surfers.

"ἐρωτηθεὶς τί τῶν μαθημάτων ἀναγκαιότατον, τὸ περιαιρεῖν, ἔφη, τὸ ἀπομανθάνειν."

Original Greek, Diogenes Laertius 6.7. Greek: Hicks 1925 Loeb text via Perseus.

Antisthenes (c. 446–366 BC). Student of Socrates and forerunner of the Cynics.

Who said "The most necessary skill: unlearning."?: Antisthenes (c. 446–366 BC). Source: Diogenes Laertius 6.7.
What is the original Greek?: ἐρωτηθεὶς τί τῶν μαθημάτων ἀναγκαιότατον, τὸ περιαιρεῖν, ἔφη, τὸ ἀπομανθάνειν. Translated from the original Greek by Spartan Surfers.