Ecclesiastes 2:9-11

I became very famous, even greater than anyone who had lived in Jerusalem before me. My wisdom helped me in all this. Anything I saw and wanted, I got for myself; I did not miss any pleasure I desired. I was pleased with everything I did, and this pleasure was the reward for all my hard work. But then I looked at what I had done, and I thought about all the hard work. Suddenly I realized it was useless, like chasing the wind. There is nothing to gain from anything we do here on earth.