The title is that of a book of poems by James Merrill
that includes “The Emerald.”
“As above, so below.” — The Emerald Tablet
“The Emerald Tablet … is a compact and cryptic piece of
the Hermetica reputed to contain the secret of the prima materia
and its transmutation. It was highly regarded by European alchemists
as the foundation of their art and its Hermetic tradition.” — Wikipedia
Animated version of Book I, Proposition 47, Euclid’s Elements —