Invisible Man
It took me a long time and much painful boomeranging of my expectations to achieve a realization everyone else appears to have been born with: That I am nobody but myself. But first I had to discover that I am an invisible man!
Go Tell It on the Mountain
That moment gave him, from that time on, if not a weapon at least a shield; he apprehended totally, without belief or understanding, that he had in himself a power that other people lacked; that he could use this to save himself, to raise himself; and that, perhaps, with this power he might one day win that love which he so longed for.
Based on these excerpts, what is one theme that Invisible Man and Go Tell It on the Mountain share?