Book excerpt: In his now-classic volume, offered for the first time in trade paperback, Mike Mason makes a poetic search for understanding of the wondrous dynamics of committed love. In highly readable, first-person style, Mason muses on everyday miracles within marriage, and frankly addresses the demands to self which true oneness requires. "A marriage is not a joining of two worlds," says the author, "but an abandoning of two worlds in order that one new one might be formed." Rich chapters on "Otherness," "Vows," "Intimacy," "Sex," and "Submission," lift readers above the mundane in coupledom to view the eternal, spiritual nature of setting out on this faith-filled, "impossible," wild -- yet wonderful -- frontier.