"That is noble, then." Because otherwise it sounded like needless futility. He presumes the dying is a noble oath, and not a reality. Even Astartes only die, well, twice.

"Why does the surface harm you? Is it happening here?" Which is, well, the surface.

"I have tried, unfortunately, to find alternatives. It has been...disastrous." Which was why he was now only trusting his armor, depowered and truculent.