These 16 sermons contain in concentrated form some of Tillich's most lambent themes. Although they were first published in the early 1960s, the pieces in question take up preoccupations which continue to haunt us at the beginning of the 21st century. Tillich discusses, among other topics, wisdom; salvation; loneliness and solitude; creation in relation to the creator; inequality; and spiritual presence. He has a desire to make sense of the fundamental mystery of Christian theology: the paradox of the moment which is now wherein comes the mystery which is eternity.