Read it through once

First he said, “If a man declared to me, This my son Valens, this my other son, Were James and Peter,--nay, declared as well This lad was very John,--I could believe! --Could, for a moment, doubtlessly believe: {75} So is myself withdrawn into my depths, The soul retreated from the perished brain Whence it was wont to feel and use the world Through these dull members, done with long ago. Yet I myself remain; I feel myself: {80} And there is nothing lost. Let be, awhile!”