'The heart is where we encounter the most resistance to Christ's lordship over our lives. It is the heart more than the mind that clings to idols and false loves. The mind can be reeducated with good teaching and consistent preaching, but the heart stubbornly and secretly chooses its own way. Only when we get to this essential part of the self, its command-and-control center, can Christian formation push down deep roots.'
Jonathan Grant, Divine Sex, p.187.