2:24 There is nothing better for people than to eat and drink,
and to find enjoyment in their work.
I also perceived that this ability to find enjoyment comes from God.
4:4 Then I considered all the skillful work that is done:
Surely it is nothing more than competition between one person and another.
This also is profitless – like chasing the wind.
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.