5A wise man will hear, and will increase learning; and a man of understanding shall attain unto wise counsels: 6To understand a proverb, and the interpretation; the words of the wise, and their dark sayings.
The Scriptures, and especially the proverbs, are not only for the foolish man to become wise, but also for the wise man to become wiser. In this regard, we may compare the Scriptures to the widow's cruse (I Kings 17) that was replenished daily, so that it never was depleted. So to, repairing frequently to the Holy Scriptures will not cause us to deplete the resources of wisdom, but instead will give us greater wisdom.
Notice that by hearing the wise man becomes wise, increasing his learning. Furthermore, notice that the understanding of the proverb is encompassed within this attainable knowledge together with the interpretation - the words of the wise and those things that harder to understand, the "dark sayings."
5ישׁמע חכם ויוסף לקח ונבון תחבלות יקנה׃ 6להבין משׁל ומליצה דברי חכמים וחידתם׃
5τῶνδε γὰρ ἀκούσας σοφὸς σοφώτερος ἔσται, ὁ δὲ νοήμων κυβέρνησιν κτήσεται 6νοήσει τε παραβολὴν καὶ σκοτεινὸν λόγον ῥήσεις τε σοφῶν καὶ αἰνίγματα.
5audiens sapiens sapientior erit et intellegens gubernacula possidebit 6animadvertet parabolam et interpretationem verba sapientium et enigmata eorum