I don't know.

　　People in this world to live a wonderful.

　　How wonderful?

　　I don't know.

　　People have to have dreams in this world 。

　　What dreams?

　　I don't know.

　　People should have happiness in this world.

　　So happy ？ I don't know.

　　People in this world to be happy.

　　How to be happy?

　　I don't know.

　　people should have achievements in this world.

　　What grades?

　　I don't know.

　　People should learn in this world. Lifelong learning .

　　Save your study?

　　I don't know.

　　I don't know anything .