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.
4:16 There is no end to all the people nor to the past generations,
yet future generations will not rejoice in him.
This also is profitless and like chasing the wind.
6:9 It is better to be content with what the eyes can see
than for one’s heart always to crave more.
This continual longing is futile – like chasing the wind.