Ecclesiastes 2:3, 17

I searched in my heart how to cheer my flesh with wine, my heart yet guiding me with wisdom, and how to lay hold on folly, till I might see what it was good for the sons of men that they should do under heaven all the days of their life.

So I hated life, because the work that is wrought under the sun was grievous unto me; for all is vanity and a striving after wind.