לֹֽא־נָאוֶ֣ה לִכְסִ֣יל תַּעֲנ֑וּג אַ֝֗ף כִּֽי־לְעֶ֤בֶד ׀ מְשֹׁ֬ל בְּשָׂרִֽים׃
Luxury is not seemly for a fool; Much less for a servant to have rule over princes.
Read Jewish philosophical commentary on Proverbs 19:10: and classical philosophical sources.