Καὶ τῶν λεγόντων εὖ καλὸν τὸ μανθάνειν → It is a fine thing to learn from those who speak well
perseverance: P. καρτερία, ἡ, καρτέρησις, ἡ.
industry: P. φιλοπονία, ἡ, P. and V. σπουδή, ἡ.
practice: P. μελέτη, ἡ.