" The communication of emotion may be the primary means by which these attachment experiences shape the developing mind. Research suggests that emotion serves as a central organizing process within the brain. In this way, an individual’s abilities to organize emotions—a product, in part, of earlier attachment relationships—directly shapes the ability of the mind to integrate experience and to adapt to future stressors. "

― Daniel J. Siegel , The Developing Mind: How Relationships and the Brain Interact to Shape Who We Are