This document contains excerpts from various sources discussing the Christian doctrine of the Trinity. It describes how the Trinity reflects an eternal community of mutual, self-giving love between the Father, Son, and Holy Spirit. It also discusses how understanding God as triune, rather than unipersonal, means that love, not power, is at the center of reality. Finally, it explores some of the metaphysical claims of Christianity, such as the idea that self-giving love is what sustains all life and provides meaning.