Key verses in Chapter 8 to think about:
8:6 - For there is a proper time and procedure for every matter, though
a man's misery weighs heavily upon him.
8:8 -No man has power over the wind to contain it,
so no one has power of the day of his death. As no one is discharged in
time of war, so wickedness will not release those who practice it.
8:17 - No one can comprehend what goes on under the sun. Despite all his efforts to search it out, man cannot discover its meaning. Even if a wise man claims he knows, he cannot really comprehend it.