Ecclesiastes 1:8

1:8 All this monotony is tiresome; no one can bear to describe it:

The eye is never satisfied with seeing, nor is the ear ever content with hearing.

Ecclesiastes 2:22

Painful Days and Restless Nights

2:22 What does a man acquire from all his labor

and from the anxiety that accompanies his toil on earth?

Ecclesiastes 5:15-17

5:15 Just as he came forth from his mother's womb, naked will he return as he came,

and he will take nothing in his hand that he may carry away from his toil.

5:16 This is another misfortune:

Just as he came, so will he go.

What did he gain from toiling for the wind?

5:17 Surely, he ate in darkness every day of his life,

and he suffered greatly with sickness and anger.