pronoun. it; A thing as the object of a verb or preposition that also appears as the subject
pronoun. it; used to intensify the subject, especially to emphasize that it is the only participant in the predicate
the GNU version of the Collaborative International Dictionary of English
pronoun. The neuter reflexive pronoun of it
The Century Dictionary and Cyclopedia
The neuter pronoun corresponding to himself, herself. (See himself.) Its emphatic and reflexive uses are like those of himself.
Word Usage
"The end of poetry is not an after-effect, not a pleasurable memory of itself, but an immediate, constant and even unpleasant insistence upon itself ."