Establishing that the self exists--"cogito, ergo sum", though "I am" is sufficient--establishes the dichotomy between the self and the non-self, which subsequently establishes the reality of the self: the self and the non-self, combined; from there, it's a matter of examining that reality via the hypothetico-deductive model. Questioning the self instantiates the self, thereby providing the requisite consequence for the theory that the self exists; that is, instantiation satisfies the hypothetico-deductive model, providing the consequence required by the proposition. In short, a perfect logical system is established.
William Carlos Williams, "Landscape With The Fall Of Icarus"
According to Brueghel
when Icarus fell
it was spring
a farmer was ploughing
his field
the whole pageantry
of the year was
awake tingling
near
the edge of the sea
concerned
with itself
sweating in the sun
that melted
the wings' wax
unsignificantly
off the coast
there was
a splash quite unnoticed
this was
Icarus drowning
I turn twenty-one in January; I'd like to begin bottling dandelion wine in the spring. I'm finished with thoughts of any consequence; my notebooks are gone--only the preceding paragraph remains, a splash quite unnoticed.