How does Milan Kundera use imagery in The Joke?

Imagery:

"And because my body had dissolved in space and all I could feel was the touch of her fingers on my face, I imagined that the gentle hands holding (turning, stroking) my head did so as if it were unattached to my body, as if it existed independently and the sharp razor waiting on the nearby table were there merely to consummate that beautiful independence."

"Youth is terrible: it is a stage trod by children in buskins and a variety of costumes mouthing speeches they've memorized and fanatically believe but only half understand. And history is terrible because it so often ends up a playground for the immature; a playground for the young Nero, a playground for the young Bonaparte, a playground for the easily roused mobs of children whose simulated passions and simplistic poses suddenly metamorphose into a catastrophically real reality."