Solomon
Proverbs 22:7ESV·traditional attribution

The rich rules over the poor, and the borrower is the slave of the lender.

Matthew Henry Presbyterian @wholebiblehenry

He had said (Pro 22:2.), Rich and poor meet together; but here he finds, here he shows, that, as to the things of this life, there is a great difference; for, 1. Those that have little will be in subjection to those that have much, because they have dependence upon them, they have received, and expect to receive, support from them: The rich rule over...

John Gill Reformed Baptist @doctorgill

The rich ruleth over the poor,.... Usurps a dominion over them, and exercises it in a rigorous, oppressive, and tyrannical manner; otherwise they are generally the rich that rule, and if they rule well, in a lawful, gentle, and righteous manner, it is commendable; and the borrower is servant to the lender; being under obligation to him, he is forced to be subject to him...

Jamieson-Fausset-Brown Reformed @jfbcommentary

The influence of wealth sets aside moral distinctions is implied, and, of course, disapproved (compare Pro 19:6; Pro 21:14, &c.).