Meaning of ITSELF in English
■ pronoun [ third person singular ]
1》 [ reflexive ] used as the object of a verb or preposition to refer to a thing or animal previously mentioned as the subject of the clause.
2》 [ emphatic ] used to emphasize a particular thing or animal mentioned.
↘used to emphasize what a perfect example of a particular quality someone or something is.
in ~ viewed in its essential qualities.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004