'Human' in the Bible

And I set my mind to seek and explore by [man’s] wisdom all [human activity] that has been done under heaven. It is a miserable business and a burdensome task which God has given the sons of men with which to be busy and distressed.

I spoke with my heart, saying, “Behold, I have acquired great [human] wisdom and experience, more than all who were over Jerusalem before me; and my mind has observed a wealth of [moral] wisdom and [scientific] knowledge.”

For in much [human] wisdom there is much displeasure and exasperation; increasing knowledge increases sorrow.

I explored with my mind how to gratify myself with wine while [at the same time] having my mind remain steady and guide me wisely; and how to take control of foolishness, until I could see what was good for the sons of men to do under heaven all the days of their lives.

So I turned to consider [secular] wisdom, madness, and folly; for what will the man do who succeeds the king? Nothing except what has already been done.

Then I saw that [even secular] wisdom [that brings sorrow] is better than [the pleasures of] folly and self-indulgence as light excels darkness.

For who [limited by human wisdom] knows what is good for man during his lifetime, during the few days of his futile life? He spends them like a shadow [staying busy, but achieving nothing of lasting value]. For who can tell a man what will happen after him [to his work, his treasure, his plans] under the sun [after his life is over]?