Jürgen Moltmann's Religion, Revolution and the Future contains the two following quotations on Earth Ethics. An eschatology with a God without Future—a hope without the Earth—begets an Atheism that hopes for a Future without God. The Cosmic Christ, The Pantocrator, is The Lord over all Creation, not just a group of men or subset of their souls. As Karl Barth said, the exterior basis of Creation is the Covenant and the interior basis of Creation is the Covenant. A faith without Creation is Marcionism. Any eschatology of hope that excludes a hope for the Earth, only creates Atheism as a hope for the Earth. (For further assessment of Moltmann's Ethic of Hope, see my post on Moltmann's Ethic of Hope for the Earth.)
Since Christians, the churches, and theology believed in a 'God without future' the earth has joined itself to an atheism which sought a future without God. The messianic hope emigrated from the church and became invested, evolution, and revolution." Jürgen Moltmann, Religion, Revolution and the Future
Moltmann, Jürgen Religion, Revolution and the Future. New York: Charles Scribner's Sons, 1969. Trans. M. Douglas Meeks. 200-1. Print.
"If one hopes for the sake of Christ in the future of God and the ultimate liberation of the world, he cannot passively wait for this future and, like the apocalyptic believers, withdraw from the world. Rather, he must seek this future, strive for it, and already here be in correspondence to it in the active renewal of life and of the conditions of life and therefore realize it already here according to the measure of possibilities. Because this future is the future of one God, it is a unique and unifying future. Because it brings eschatological liberation, it is the salvation of the whole enslaved creation. The messianic future for which Christianity arouses hope is no special future for the church or for the soul alone. It is an all-encompassing future. As all-encompassing future, its power of hope is able to mediate faith to earthly needs and to lead it into real life."
Moltmann, Jürgen Religion, Revolution and the Future. New York: Charles Scribner's Sons, 1969. Trans. M. Douglas Meeks. 218. Print.
Related: Earth, Earth Ethics, Jürgen Moltmann, Pantocrator, Religion Revolution and the Future