Ecclesiastes 2:25

2:25 For no one can eat and drink

or experience joy apart from him.

Ecclesiastes 4:9

Labor is Beneficial When Its Rewards Are Shared

4:9 Two people are better than one,

because they can reap more benefit from their labor.

Ecclesiastes 6:11

6:11 The more one argues with words, the less he accomplishes.

How does that benefit him?

Ecclesiastes 9:18

9:18 Wisdom is better than weapons of war,

but one sinner can destroy much that is good.