The humanization of Christ (born from the changes in monasticism wrought by St. Anselm and St. Bernard), the birth of a new piety of interiority, the move in the arts and in literature from epic to romance -- nothing less than this -- the origins of the modern subjective self, which Southern traces to the new monasticism of the 12th cen -- is the thesis of this final chapter (of which all the earlier chapters are simply prelude). An important book, though the topic itself is predictably dry (medieval theology, monastic rule, St. Anselm, etc...).
Compare:
The Aaby Crucifix (Denmark, c. 1050-1100: http://commons.wikimedia.org/wiki/Category:Romanesque_crucifixes_in_Denmark)

With:
The Tirstrup Crucifix (Denmark, c. 1150) -- you should magnify the heads to get the proper contrast.