"… It raced down the gossamer curtain of Its webbing,
a nightmare Spider from beyond time and space,
a Spider from beyond the fevered imaginings of
whatever inmates may live in the deepest depths of hell.
No, Bill thought coldly, not a Spider either, not really,
but this shape isn’t one It picked out of our minds;
it’s just the closest our minds can come to
        (the deadlights)
        whatever It really is.
"

Stephen King, It  (Sept. 15, 1986)

Related horror by Fritz Leiber—

"The Mind Spider" and "Damnation Morning."

Related fiction by Mark Helprin—

In Sunlight and in Shadow .

As a perceptive reviewer has noted, Helprin's title is
almost  a verse from the song "Danny Boy."

See, too, the Danny Boy of The Shining ,
who returns tomorrow in a sequel, Doctor Sleep .

"The summer's gone and all the roses falling…."