How we cite our quotes: (Paragraph)
Quote #7
A feeling, for which I have no name, has taken possession of my soul. (13)
New perceptions and feelings could mean madness as much as a new reality. Or maybe Poe's suggesting that the two are essentially the same.
Quote #8
The colossal waters rear their heads above us like demons of the deep, but like demons confined to simple threats and forbidden to destroy. (20)
Poe lends a sense of conscious purpose to the waves, both on their own and controlled by some implied larger force. In this new version of reality, the waves have thoughts, will, even. We could chalk it up to personification, but we think there's more than that going on here. He's trying to up the ante on the terrifying.