Afraid of you? Are you good? Then who fears the good?

The source

"Afraid of you? Are you good? Then who fears the good?" Diogenes said it in Diogenes Laertius 6.68. Translated from the original Greek by Spartan Surfers.

"τί γάρ, εἶπεν, εἶ; ἀγαθὸν ἢ κακόν; τοῦ δὲ εἰπόντος, ἀγαθόν, τίς οὖν, εἶπε, τὸ ἀγαθὸν φοβεῖται;"

Original Greek, Diogenes Laertius 6.68. Greek: Hicks 1925 Loeb text via Perseus; To Alexander.

Who said it

Diogenes (c. 412–323 BC). The Cynic who lived in a jar in Athens and told Alexander the Great to get out of his sun.

Questions

Who said "Afraid of you? Are you good? Then who fears the good?"?

Diogenes (c. 412–323 BC). Source: Diogenes Laertius 6.68.

What is the original Greek?

τί γάρ, εἶπεν, εἶ; ἀγαθὸν ἢ κακόν; τοῦ δὲ εἰπόντος, ἀγαθόν, τίς οὖν, εἶπε, τὸ ἀγαθὸν φοβεῖται;. Translated from the original Greek by Spartan Surfers.