Some scientific studies suggest that human beings are innately selfish and that Christian virtues like self-sacrifice are a delusion. In this intriguing volume, esteemed theologian Thomas Jay Oord interprets the scientific research and responds from a theological and philosophical standpoint, providing a state-of-the-art overview of love and altruism studies. He offers a definition of love that is scientifically, theologically, and philosophically adequate. As Oord helps readers arrive at a clearer understanding of the definition, recipients, and forms of love, he mounts a case for Christian agape and ultimately for a loving God.