Sometimes the bird turns away. Sometimes it does not open its mouth to sing. Sometimes it is afraid of the dark. But when it forgets it is afraid and opens its mouth to sing, it fills the world with light.
Every person has a share in this world and a share in the world to come. We understand the concept of a share in the world to come, but what does it mean having a share in this world? Open your hearts. Having a share in this world means I know exactly what I have to do in this world. This is a very high level. If I know that if I don't do it, it just won't happen. Then I've just got to do it. This is my share in this world.