ψαυστέον
From LSJ
μισῶ σοφιστὴν ὅστις οὐχ αὑτῷ σοφός → I hate the sage who recks not his own rede, I hate the sage who is not wise for himself, I hate the wise man who is not wise on his own
English (LSJ)
A one must touch, Antyll. ap. Orib.10.23.23.
Greek (Liddell-Scott)
ψαυστέον: ῥημ. ἐπίθ., πρέπει τις νὰ ψαύσῃ, Ἄντυλλ. παρ’ Ὀρειβασ. 2. 436, Dar.