Practically speaking, what do these words of St. Paul mean?

"We are always confident, knowing that, whilst we are at home in the body, we are absent from the Lord:
(For we walk by faith, not by sight:)
We are confident, I say, and willing rather to be absent from the body, and to be present with the Lord."

Here is my take - a distinction between materialism and spirituality:

Was there ever a physical scientist who did not have faith in the basic assumptions of their science?

Christian Science is no different: