What is contemplation? How is it distinct from meditation? Is contemplation essentially religious or mystical? What should one contemplate, and how? Are there different styles of contemplation, and why should one practice them? Ought we try to lead more contemplative lives? This book offers a philosophical introduction to the theory and practice of contemplation. Kevin Hart examines a variety of religious, aesthetic, and philosophical notions, shedding light on the singular qualities of contemplation. This book spans topics including the spiritual exercises of the ancient Greeks, overlooked aspects of Christian spirituality, and aesthetic contemplation of nature and art. Contemplation ranges from ancient thinkers such as Aristotle, Plato, and Plotinus to Aquinas and other medieval theologians as well as modern philosophers like Kant, Husserl, and Wittgenstein. Though focused on Christianity, it also considers contemplation in other religious traditions, among them Buddhism, Hinduism, Judaism, Islam, and Paganism. Concise and comprehensive, this book provides both religious and nonreligious readers with a foundational understanding of the history and nature of contemplation as well as the benefits of practicing it.