How to use "intensity" in a sentence

Although The Eyes of Darkness does not have the intensity, the humor, the depth of characterization, the complexity of theme, or the pace of later novels, readers have responded positively to it over the years, most likely because the device of a lost child - and the dedicated mother who will do anything to find out what happened to her little boy - strikes a primal chord in all of us.

He wrote quickly, with great intensity and pleasure