כִּ֣י בְרֹ֤ב חֲלֹמוֹת֙ וַהֲבָלִ֔ים וּדְבָרִ֖ים הַרְבֵּ֑ה כִּ֥י אֶת־הָאֱלֹהִ֖ים יְרָֽא׃
For through the multitude of dreams and vanities there are also many words; but fear thou God.
Read Jewish philosophical commentary on Ecclesiastes 5:6: and classical philosophical sources.