Anybody may blame me who likes, when I add further, that, now and then, when I took a walk by myself in the grounds; when I went down to the gates and looked through them along the road; or when, while Adèle played with her nurse, and Mrs. Fairfax made jellies in the storeroom, I climbed the three staircases, raised the trap-door of the attic, and having reached the leads, looked out afar over sequestered field and hill, and along dim sky-line — that then I longed for a power of vision which might overpass that limit; which might reach the busy world, towns, regions full of life I had heard of but never seen ; that then I desired more of practical experience than I possessed; more of intercourse with my kind, of acquaintance with variety of character, than was here within my reach. I valued what was good in Mrs. Fairfax, and what was good in Adèle; but I believed in the existence of other and more vivid kinds of goodness, and what I believed in I wished to behold. (Jane Eyre)
It seems without two ‘that’s this paragraph makes sense. Then what’s the function of the two?