And finally, and probably for Milton most important, ; Milton wrote a theology, inventing in effect his own religion; and Milton's Protestantism looks like no one else's, before or since.
At its best, says Mary Evelyn Tucker of Yale University's Forum on Religionand Ecology, environmental theology goes deep inside the metaphysical ideas that underpin ancient faiths while also celebrating what believers actually do, from tending forests to limiting their food intake.