• But, in truth, the existing premises, wholly altered by geologic science, are no longer those of Hume. The footprint on the sand — to refer to his happy illustration — does not now stand alone. Instead of one, we see many footprints, each in turn in advance of the print behind it, and on a higher level.

    "The Testimony of the Rocks: Or, Geology in Its Bearings on the Two Theologies, Natural and Revealed".