When dreams are not clear the results are often as blurred. You wont be able to arrive at your desired destination if you are not certain of where youre going. You have to be able to see clearly and perfectly.
Under the influence of mercury which he administered to himself daily as a salve for his syphilis laudanum which he drank each evening in imprecisely measured amounts to enable him to sleep because of all things this brave man feared only his dreams opiate-enhanced nightmares that gave him no respite which always ended in flames from which he rose phoenix-like just before dawn each morning to recommence building what was already ash.
Knowing the path through the forest doesnt make the trip any less daunting. Knowing the steps to your dreams doesnt make the climb any less of a challenge.
The dream has a very striking way of dealing with the category of opposites and contradictions. This is simply disregarded. To the dream No does not seem to exist. In particular it prefers to draw opposites together into a unity or to represent them as one. Indeed it also takes the liberty of representing some random element by its wished-for opposite so that at first one cannot tell which of the possible poles is meant positively or negatively in the dream-thoughts.