In a book about the philosophy of William James, I have found the pattern transitive verb + adverb of manner + direct objecttransitive verb (to appreciate) + adverb of manner (fully) + direct object (what James means by distinguishing knowing into two kinds). As far as I know, grammatically speaking, it is incorrect to put an adverb of manner between the direct object and a transitive verb. The adverb must either be before the verb or after the direct object. Is, then, the following case a violation of the rule for the sake of emphasis?
To appreciate fully what James means by distinguishing knowing into two kinds, direct acquaintance and knowledge about, we need first to (...)
The brackets are mine.