Jane realises that she has more in common with Mr Rochester in comparison to his higher class guests. It also shows one of the first times she has been able to relate to a person feeling less isolated
“He is not to them what he is to me – he is not of their kind. I believe he is of mine – I am sure he is – I feel akin to him”
Jane is jealous and bothered by the fact that Blanche is going to marry Rochester as she can see how they are not suited together spiritually but rather socially.
“I saw he was going to marry her, for family,perhaps political reason:because her rank and connections suited him – she could not charm him”
Rochester lays out his groundwork saying how no one can be his bride due to “likeness” using this as an argument for later on when we discover Bertha. As they cannot be marriage as they are not “equal”
“because my equal is here, and my likeness”
St John radically separates his emotional attachment and what a good wife should be, this is similar in the way how Jane rejects Rochester – shows one day St John will marry a woman he doesn’t really love due to society
“I experience at the same time – that she would not make me a good wife – that she is not the partner suited to me”
St John is realistic to Jane about taking her away to marry him for “duty” rather than love. Jane does not agree with this view.
“He prizes me as a solider would a good weapon and that is all”