How does Ken Kesey use imagery in Sometimes a Great Notion?

Imagery:

Truth doesn't run on time like a commuter train, though time may run on truth. And the Scenes Gone By and the Scenes to Come flow blending together in the sea-green deep while Now spreads in circles on the surface. So don't sweat it. For focus simply move a few inches back or forward. And once more...look.”

“The story is told that when Joe was a child his cousins emptied his Christmas stocking and replaced the gifts with horse manure. Joe took one look and bolted for the door, eyes glittering with excitement. 'Wait, Joe, where are you going? What did ol' Santa bring you?' According to the story Joe paused at the door for a piece of rope. 'Brought me a bran'-new pony but he got away. I'll catch 'em if I hurry.'