"Legendary physicist Freeman Dyson talks about math, nuclear rockets, and astounding things about the universe". Interview with Elena Holodny, uk.businessinsider.com. September 9, 2016.
John Milton (1824). “The Poetical Works of John Milton: With Notes of Various Authors, Principally from the Editions of Thomas Newton, Charles Dunster and Thomas Warton ; to which is Prefixed Newton's Life of Milton”, p.213