How does Lawrence Thornton use imagery in Imagining Argentina?

Imagery:

"Our city is like a sophisticated dowager whose soul feeds on cynicism, a place where the mere mention of the unknown and unknowable occasions peals of bitter laughter."

"Their familiar eyes are translucent, allowing you inside. But with tragedy, it's different. The irises grow darker, become more expressive, the feeling so concentrated that you wonder if it isn't the eyes, after all, which are the true seat of understanding."