In the narrative of "Written in My Own Heart's Blood" by Diana Gabaldon, the speaker reflects on the dynamics of groups that split due to differing doctrinal beliefs. She observes that when a faction separates to pursue a divergent path, they often become even more dedicated to their remaining beliefs. This heightened commitment can lead to a fiercer adherence than that of the original group from which they parted.

This phenomenon highlights the psychological tendency for individuals in split groups to reinforce their identity and beliefs. As they distance themselves from their origins, they may feel a need to assert their new stance more passionately, resulting in stronger convictions and a more rigid interpretation of their doctrine.