Ecclesiastes 2-3: Futility of monuments, pleasure, and legacies. No control--it all ends in death.

Solomon now turns to pleasure and building great accomplishments. He has unlimited resources, and is able to study that which others only dream about. Can joy and fulfillment be found by denying yourself nothing--and by indulging in everything you feel like doing?
The answer, of course, is no. He realized that nothing can improve the human condition -- and that if there is any purpose, it must be to accept one's lot in life -- the one that God has given you.
In chapter 3, Solomon mentions the famous "time to ___" portion, but his intent is to indicate that all of these times and events come with no control or apparent purpose. They are chaotic -- but He acknowledges that God must be in charge of these 'times' -- and he allows a glimmer of hope and faith to emerge as he declares that God will make all things beautiful in His time.
He then lapses back into despair, realizing that, even if he build a great monument, or charity, or institution, he has no control over who will inherit it. It is just as likely to be a fool as a wise person.
And then he concludes that both the fool and wise person end in death -- just like the animal, so that, ultimately, it doesn't matter. Being wise and puruing greatness is basically a cosmic joke -- since, in the end -- it is still just chasing the wind.