Bob Dylan's "Jokerman"

I'm listening to Bob Dylan's The Essential Bob Dylan.  Some of these later songs I don't know very well because my Dylan knowledge (sparse as it is) is mostly centered around the mid-60s albums.  But in any case, I noticed that in "Jokerman," he quotes the old standard "Fools Rush In" in the line "Fools rush in where angels fear to tread."