I have little doubt that to an Astartes, internment in a Dreadnaught is a singular honour. One that allows him to continue to fight despite injuries so grievous they would overwhelm even transhuman physiology. An honour that ensures his hard won skill and knowledge are not lost to history.
But does such an honour transmute more than just the body? What must such isolation from the senses and the physical world we so take for granted do to a mind?
I wrestled with these questions often but could not bring myself to ask them of [REDACTED]. Instead, during the times we conversed I focused upon subjects I felt would be more palatable.
His elevation from neophyte to Astartes, his first combat deployment. His promotion in the field when he slew four of the monstrous Euyclalid. The battles he fought and foes he killed. Even the manner of his death and implantation into the sarcophagus of a Furibundus Dreadnaught, the design of which I am given to understand was old almost to the point of obscurity when the Astartes were young and the wars of Unity were yet to be concluded.
Old though the design might have been, it was no less fearsome or effective than a Contemptus Dreadnaught and on more than one occasion I found myself almost pitying those who did not call him an ally...
Illiatariu. C., Rememberancier Documantist Minoris. To Walk Among Demigods. A Treatise Upon The Nature of The Argyntum Stellae., Published 863.M33, Sector Heliopolis, Segmentum Pacificus.