Ecclesiastes 2:3; Ecclesiastes 2:12

3 I searched with my heart how to cheer my body with wine--my heart still guiding me with wisdom--and how to lay hold on folly, till I might see what was good for the children of man to do under heaven during the few days of their life.

12 So I turned to consider wisdom and madness and folly. For what can the man do who comes after the king? Only what has already been done.