Tom,
I must say you have me flummoxed with this quote of yours. When folk talk of "pains of the flesh", I think of the anti-Pope conservative Catholic film maker and his Movie of torture of the flesh in The Passion of the Christ, Dante's terrible Inferno or some Kant wonderings about esthetics or Church writers talking about "flesh v. virtue". 
If not for the baffling quotation, I'd have just considered this to be of life speeding past as one person contemplates matters on a slow timescale, almost devoid of possessions. Behind there's some reference the Christ, maybe some warning for us to get on the right trolley before it's too late.
But then, we're just musing beyond what we are certain about, we're just "flesh and bone" and pretty delusional!
Asher