עֲמַ֥ל הַכְּסִילִ֖ים תְּיַגְּעֶ֑נּוּ אֲשֶׁ֥ר לֹֽא־יָדַ֖ע לָלֶ֥כֶת אֶל־עִֽיר׃
The labour of fools wearieth every one of them, for he knoweth not how to go to the city.
Read kabbalistic (mystical) interpretation of Ecclesiastes 10:15: and classical mystical sources.