Ecclesiastes 4:8
There is one alone, and there is not a second; yes, he has neither child nor brother: yet is there no end of all his labor; neither is his eye satisfied with riches; neither said he, For whom do I labor, and bereave my soul of good? This is also vanity, yes, it is a sore travail.
Torrey's Topical Textbook—AKJV

Ecclesiastes 5:10
He that loves silver shall not be satisfied with silver; nor he that loves abundance with increase: this is also vanity.
Torrey's Topical Textbook—AKJV