Old Jules was referring to something else, a serious enough issue on its own, and not necessarily the lack of vision among Republican presidential candidates.
But it fits from time to time:
Bill Cosby once asked if anyone else had the same chill of fear he gets when the lights start to go down at the theater: Are the lights getting dim, or are you going blind?
Is there zero visibility, or are our eyes shut tightly? Can the candidates see what it takes to get us out of this olio, this olla podrida of messes, or is there too much fog, or are they just not looking? Worse, is it dark AND they are not looking?
What say you?