How does Gary Paulsen use imagery in The Winter Room?

Examples of Imagery:

"If books could be more, could show more, could own more, this book would have smells..."

"It's a time for everything to get soft and melty. And when it all starts to melt and get soft the smells come out."

"Winter is all changes. Snow comes and makes it all different outside so things you see in the other times of the year are covered and gone."