How does Dan Millman use imagery in Sacred Journey of the Peaceful Warrior?

Imagery:

Suddenly, everything grew brighter. I felt my face flush, and my hands started to tingle.

'Ignorance, as well as wisdom, is handed down from one generation to the next like a precious heirloom.'

Trapped within its steel mind, I heard its droning voice, slow at first, then more rapidly playing again and again: 'I - am - all - there - is. The - Higher - Self - is - an - illusion.'