Book excerpt: The essential companion to Pierre Teilhard de Chardin's The Phenomenom of Man, The Divine Milieu expands on the spiritual message so basic to his thought. He shows how man's spiritual life can become a participation in the destiny of the universe. Teilhard de Chardin -- geologist, priest, and major voice in twentieth-century Christianity -- probes the ultimate meaning of all physical exploration and the fruit of his own inner life. The Divine Milieu is a spiritual treasure for every religion bookshelf.