Two blades from one origin

I looked into the origin of the frequently stated "two blades of grass from where one grew before" statement in our readings (I have seen it Worster's book where Thoreau uses the statement to support polytheism, and in the Marsh article)

The origin is from Jonathan Swift's "Gulliver Travels" (publ. 1726). In the book a character, King Brogdingnag, says "Whoever could make two ears of corn or two blades of grass grow upon a spot of ground where only one grew before, would deserve better of mankind, and would do more essential service to his country then the whole race of politicians put together" (see JSTOR article, review of" two blades of grass": http://www.jstor.org/view/10711031/ap040106/04a00180/0)