The subject of this Essay is not the so-called Liberty of the Will, so unfortunately opposed to the misnamed doctrine of Philosophical Necessity; but Civil, or Social Liberty: the nature and limits of the power which can be legitimately exercised by society over the individual.
The part that I confused about this sentence is ‘so unfortunately opposed to the misnamed doctrine of Philosophical Necessity’.
First, I don’t know that if the word ‘so’ can understand either as an adverb or a conjunction. If ‘so’ is an adverb then in that sentence it means that the ‘Liberty of the Will’ is opposed to the misnamed doctrine. And if ‘so’ is a conjunction the sentence means that 'the subject' is opposed to the misnamed doctrine.
And second, I don't know what 'the misnamed doctrine of Philosophical Necessity' means. Does it mean that there are some doctrines in 'Philosophical Necessity' and the one that opposed to "Liberty of Will" (or subject) is misnamed or does it mean that 'Philosophical Necessity' is misnamed, and if this is true why the writer didn't write it as 'the doctrine of misnamed Philosophical Necessity'.
Please help me understand those. Thanks.