Solomon
Ecclesiastes 4:8BSB·traditional attribution

There is a man all alone, without even a son or brother. And though there is no end to his labor, his eyes are still not content with his wealth: “For whom do I toil and bereave my soul of enjoyment?” This too is futile—a miserable task.

Matthew Henry Presbyterian @wholebiblehenry

Here Solomon fastens upon another instance of the vanity of this world, that frequently the more men have of it the more they would have; and on this they are so intent that they have no enjoyment of what they have. Now Solomon here shows, I.

Commenting on Ecclesiastes 4:7-12

John Gill Reformed Baptist @doctorgill

There is one alone, and there is not a second,.... According to Aben Ezra, either no friend or companion, or no servant, or no wife, which last sense he prefers; no friend or companion he chooses, because friendship and fellowship lead to expenses; and no servant who would be chargeable to him; and no wife, which would be more expensive, and bring on a family...

Jamieson-Fausset-Brown Reformed @jfbcommentary

not a second--no partner. child--"son or brother," put for any heir (Deu 25:5-10). eye-- (Ecc 1:8). The miser would not be able to give an account of his infatuation.