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For an hour or more, I remained too stunned to think; and it was not until I began to think, that I began fully to know how wrecked I was, and how the ship in which I had sailed was gone to pieces. (39.97)
Here we see the connection between those ships that Pip used to watch on the marshes at home those many years ago and his current circumstances. When he watched the ships on the horizon, he'd dream about the life he couldn't have. The ships became a metaphor for a life of money and privilege—but once he actually got on board, it promptly sank. What does he have on his horizon now to dream about?
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. (39.98)
Pip's great expectations just led to suffering—and growing up a little. Dreams may only bring suffering, but only suffering makes you a man.
Too heavily out of sorts to care much at the time whether it were he or no, or after all to touch the breakfast, I washed the weather and the journey from my face and hands, and went out to the memorable old house that it would have been so much the better for me never to have entered, never to have seen. (43.57)
Pip thinks he would be happier if he had never been exposed to Miss Havisham's house, which reminds us that Pip was first made to visit Miss Havisham in order to fulfill or attempt to fulfill the dreams and hopes of others: Mrs. Joe and Mr. Pumblechook (not to mention Miss Havisham).