Is the "Patience will untie it" rhyme a reference to something?
In The Flash Season 3, there are a couple of episodes (such as 3x06 "Shade" and 3x11 "Dead or Alive") where H.R. and later Cisco have said a rhyme that goes like this:
"If a string is in a knot, patience will untie it. Patience can do lots of things, have you ever tried it?"
Is this a reference to something? Unfortunately, searching online only turns up irrelevant results or copies of the show quote for me.
This might be a nursery rhyme called Patience by Anna Maria Pratt. Pratt was a teacher for several years in Cleveland, Ohio. Her focus was on children's literature, and she published Little Rhymes for Little People in 1896.
If a string is in a knot,
Patience will untie it.
Patience can do many things—
Did you ever try it?
If it was sold at any shop
I should like to buy it.
But you and I must find our own—
No other can supply it.
--Anna M. Pratt