כָּל־עֲמַ֥ל הָאָדָ֖ם לְפִ֑יהוּ וְגַם־הַנֶּ֖פֶשׁ לֹ֥א תִמָּלֵֽא׃
All the labour of man is for his mouth, And yet the appetite is not filled.
Proverbs
The toiling spirit will have toiled for itself [i.e., for its own benefit] when its mouth makes demands upon it.