The Sudras, the lowest caste, are seen as persons who exist to serve the higher castes or “twice born”.

if you call being born twice normal.

I didn't want you to have to born twice.

The Na'vi say, every person is born twice.

The Na'vi say, every person is born twice.

The Na 'vi say that every person is born twice,

The Na'vi say that every person is born twice.

The Na'vi say that every person is born twice.

The Na'vi say that every person is born twice.

Well, if you call being born twice normal.