אֹהֵ֥ב כֶּ֙סֶף֙ לֹא־יִשְׂבַּ֣ע כֶּ֔סֶף וּמִֽי־אֹהֵ֥ב בֶּהָמ֖וֹן לֹ֣א תְבוּאָ֑ה גַּם־זֶ֖ה הָֽבֶל׃
He that loveth silver shall not be satisfied with silver; nor he that loveth abundance, with increase; this also is vanity.
Read Jewish philosophical commentary on Ecclesiastes 5:9: and classical philosophical sources.