Who said: "rocks and rills, the woods and templed hills"?

It’s a quotation alluded to in “Once Upon a Wilderness” by Calvin Rutstrum. Googling for the phrase, I see it is often alluded to. But I can’t quite decide who the original author was.

I was guessing some kind of poet, like Keats. But I’m just not sure.

If you can provide a book or web reference for your claim, I would appreciate it.