Read it through once

Miss Havisham’s intentions towards me, all a mere dream; Estella not designed for me; I only suffered in Satis House as a convenience, a sting for the greedy relations, a model with a mechanical heart to practise on when no other practice was at hand; those were the first smarts I had. But, sharpest and deepest pain of all,—it was for the convict, guilty of I knew not what crimes, and liable to be taken out of those rooms where I sat thinking, and hanged at the Old Bailey door, that I had deserted Joe.