Indifferency meaning

I carried it on as far as this with a sort of indifferency that he often wondered at, more than at first, but which was the only support of his courtship; and I mention it the rather to intimate again to the ladies that nothing but want of courage for such an indifferency makes our sex so cheap, and prepares them to be ill-used as they are; would they venture the loss of a pretending fop now and then, who carries it high upon the point of his own merit, they would certainly be less slighted, and courted more.

For example, one sceptical figure praised the Church of England, in Hume's phrase, "as a Church tending to keep down fanaticism," and recommendable for its very indifferency; whereupon a transcendental figure urges him: "You are afraid of the horse's kicking: but will you sacrifice all qualities to being safe from that?