Pupa, larvae and unborn butterflies

Everyone has some unborn butterflies in them,
They are kept in a glass jar within one's heart,
Some people keep only larvae, some people pupae,
Some people keep caterpillars too,

Once in broad day light,
While standing under the sun,
Perceiving its halo,
One can get the feel of unborn butterflies inside
And at that moment another being of self is discovered.