The generated response is incorrect in its identification of “We have seen all the days of creation in one day” as coming from John Milton’s Paradise Lost. The quotation is found nowhere within Milton’s great epic.

Rather, the line comes from an untitled poem by Robert Lax that was first published in The Circus of the Sun in 1959. The line looks back to the poet’s childhood experience of seeing a circus setting up in a field near his home. He uses the circus as a metaphor for creation. As the workers set up all the tents and other elements of the circus, Lax, looking back, is reminded of the six days of creation. The circus becomes a little world for him, in all its strangeness and diversity, and it reflects important things about the larger world. Readers are invited to think about the connections between the circus and the world.

You can easily discover the author of a quotation like this one by doing a simple Internet search. Put the quotation within quotation marks in the search box, and then carefully assess the search results to discover the author and text.