In his new book, John S. Dunne asks: "So what is eternal consciousness? It is, I take it, consciousness of the eternal in us. If time is 'a changing image of eternity, ' as Plato says, the changing image of the human being is like The Voyage of Life, four paintings by Thomas Cole, showing childhood, youth, adulthood, and age. The eternal in us is the person going through these phases. It is the vertical dimension of the life, as in the title scene...