Authors:

If the national park is, as Lord Bryce suggested, the best idea America has ever had, wilderness preservation is the highest refinement of that idea.

Wallace Earle Stegner (1995). “Where the bluebird sings to the lemonade springs: living and writing in the West”, Random House Value Pub
If the national park is, as Lord Bryce suggested, the best idea America has ever had, wilderness preservation is the highest refinement of that idea.