Ecclesiastes 4:4-8

And I saw that all toil and all achievement spring from one person’s envy of another. This too is meaningless, a chasing after the wind. Fools fold their hands and ruin themselves. Better one handful with tranquillity than two handfuls with toil and chasing after the wind. Again I saw something meaningless under the sun: there was a man all alone; he had neither son nor brother. There was no end to his toil, yet his eyes were not content with his wealth. ‘For whom am I toiling,’ he asked, ‘and why am I depriving myself of enjoyment?’ This too is meaningless – a miserable business!