“I feel nothing except a certain difficulty in continuing to exist.”

“There is nothing certain, nothing at all except the unimportance of everything I understand, and the greatness of something incomprehensible but all-important.”

“I was awake and this was reality, the new reality of nothing--and worse, of having to continue to exist.”

“To say "all that which does not exist" is to introduce, effectively, a new concept, but it does not bring into existence anything more than that very concept which it introduces. That is, a certain entity about which we know nothing except that it bears the name of "all that which does not exist.”

“...but in this world nothing can be said to be certain, except death and taxes.”

“I continue to exist, and he continues to exist, but we don't exist together. Days continue to pass no matter who I exist with, though.”