Surely much knowledge is a grievous thing for him who does not control his tongue; this man is really a child with a knife.
ἦ πολυιδρείη χαλεπὸν κακόν, ὅστις ἀκαρτεῖ
γλώσσης· ὡς ἐτεὸν παῖς ὅδε μαῦλιν ἔχει.
γλώσσης· ὡς ἐτεὸν παῖς ὅδε μαῦλιν ἔχει.
Original text (Ancient Greek)