Ecclesiastes 1:2-3; Ecclesiastes 1:14; Ecclesiastes 1:17

2 “Everything is meaningless,” says the Teacher, “completely meaningless!” 3 What do people get for all their hard work under the sun?
14 I observed everything going on under the sun, and really, it is all meaningless—like chasing the wind.
17 So I set out to learn everything from wisdom to madness and folly. But I learned firsthand that pursuing all this is like chasing the wind.