at home in this world

I do not know much about gods; but I think the river
Is a strong brown god -- sullen, untamed and intractable,
Patient to some degree, at first recognised as a frontier;
Useful, untrustworthy as a conveyor of commerce;
Then only a problem confronting the builder of bridges.
The problem once solved, the brown god is almost forgotten
By the dwellers in the cities -- ever, however, implacable,
Keeping his seasons and rages, destroyer, reminder
Of what men choose to forget. Unhonoured, unpropitiated
By worshippers of the machine, but waiting, watching and
        waiting.

- T.S. Eliot, The Dry Salvages