In chapter 7 what quote suggest that Victor views the creature as a part of himself?

In Chapter 7 of Frankenstein, I think
this is the quote you are looking for:

readability="9">

I revolved in my mind the events which I had
until now sought to forget: the whole train of my progress towards the creation; the
appearance of the work of my own hands alive at my bedside; its departure. Two years had
now nearly elapsed since the night on which he first received life; and was this his
first crime? Alas! I had turned loose into the world a depraved wretch, whose delight
was in carnage and misery; had he not murdered my
brother?

And perhaps this one
too:

My tale
was not one to announce publicly; its astounding horror would be looked upon as madness
by the vulgar. Did any one indeed exist, except I, the creator, who would believe,
unless his senses convinced him, in the existence of the living monument of presumption
and rash ignorance which I had let loose upon the
world?

This is a case of
metonymy and synecdoche: Victor uses phrases like "rash ignorance" and "the appearance
of the work of my own hands" and "my tale" and "its astounding horror" as substitutions
for both the monster (his creation) and a part of himself, his dark side or
alter-ego.

Indeed the monster is the product of Victor's
morbid thoughts, the sum work of his journal, and his own fears.  It's as if the monster
is an overgrown murderous child, an Id run wild.  The monster is indeed Victor's
doppelganger, his ghostly twin who has come to haunt his family as
revenge for abandoning him and not making him a mate.