2:3 I thought deeply about the effects of indulging myself with wine
(all the while my mind was guiding me with wisdom)
and the effects of behaving foolishly,
so that I might discover what is profitable
for people to do on earth during the few days of their lives.
4:8 A man who is all alone with no companion,
he has no children nor siblings;
yet there is no end to all his toil,
and he is never satisfied with riches.
He laments, “For whom am I toiling and depriving myself of pleasure?”
This also is futile and a burdensome task!