וְגַם־זֹה֙ רָעָ֣ה חוֹלָ֔ה כָּל־עֻמַּ֥ת שֶׁבָּ֖א כֵּ֣ן יֵלֵ֑ךְ וּמַה־יִּתְר֣וֹן ל֔וֹ שֶֽׁיַּעֲמֹ֖ל לָרֽוּחַ׃
And this also is a grievous evil, that in all points as he came, so shall he go; and what profit hath he that he laboureth for the wind?
Read Jewish philosophical commentary on Ecclesiastes 5:15: and classical philosophical sources.