שְׁא֣וֹל ואבדה [וַ֭אֲבַדּוֹ] לֹ֣א תִשְׂבַּ֑עְנָה וְעֵינֵ֥י הָ֝אָדָ֗ם לֹ֣א תִשְׂבַּֽעְנָה׃
The nether-world and Destruction are never satiated; So the eyes of man are never satiated.
Read Jewish philosophical commentary on Proverbs 27:20: and classical philosophical sources.