How does Philip K. Dick use imagery in The Man in the High Castle?

Imagery:

"We're barbarians compared to them, Childan realized. We're no more than boobs against such pitiless reasoning. Paul did not say—did not tell me—that our art was worthless; he got me to say it for him. And, as a final irony, he regretted my utterance. Faint, civilized gesture of sorrow as he hear the truth out of me."

"I have to get out of here; I am having an attack. My body is throwing up things or spurting them out—I am dying."