Memory, Amnesia, and Identity

Memory, amnesia, and identity are bound together in the novel through a self that does not simply recover its former name when the past returns. Matthew Rose Sorensen has lived in the House as Piranesi, unaware of his history and of his enmity with The Other. When memory breaks through, he does not discard the identity formed in the House: he understands himself as the Beloved Child of the House, recognizes Matthew as still present within him, and later pieces Matthew together from journals, belongings, and other people’s accounts. The result is neither a clean restoration nor a simple replacement, but a continuing life shared by identities with unequal access to memory.

Names and the Identity of the House

During the crisis in which he is asked whether he is Matthew Rose Sorensen, Piranesi initially cannot get beyond the words I am. The answer that steadies him is that he is the Beloved Child of the House. He then asserts, I am Piranesi, but immediately qualifies the claim: he does not really believe that Piranesi is his name and is almost certain it is not. The sequence separates several kinds of identity. The House gives him a sustaining sense of belonging; Piranesi is the name under which he has lived; Matthew Rose Sorensen is the identity whose history has been lost.

The origin of the name Piranesi makes that distinction sharper. The Other once explained that he needed something to call him, that the name suited him because it was associated with labyrinths, and that it had begun as a sort of joke. What had become the name of an entire life was therefore not a recovered personal name but a label supplied by the person who had brought him into that life. The name could fit the labyrinth-dweller while also helping The Other avoid addressing him as Matthew Rose Sorensen.

Memory Returns and Reveals Enmity

The return of knowledge changes Piranesi’s understanding of his relationship with The Other. He recognizes that The Other is not his friend but his enemy, and understands that Matthew Rose Sorensen had known this before the amnesia. Forgetting Matthew had also erased the knowledge of the enemy who stood beside him. The Other, by contrast, remembered, and was apprehensive that Piranesi might remember too.

The Other’s use of the name Piranesi and his memory tests take on a different meaning in retrospect. He spoke words such as Battersea to see whether they would awaken anything. Piranesi had dismissed Battersea as nonsense, but now recognizes it as a word that meant something to Matthew. The test exposes an imbalance: The Other possessed knowledge of the former life and could probe for its return, while the person being tested could not understand what was being tested. Piranesi’s fury at the message left by 16 also belongs to this turning point. He believes she has found a way to fulfil her dark purpose and make him mad, because her message cannot be erased without being read; the effort to avoid knowledge has become a trap that requires confronting it.

The Unconscious Matthew Within Piranesi

The recovered past does not arrive as an intact second life that Piranesi can simply take up. After the revelation, he experiences sobs and cries that seem not to belong to his present self. He imagines that Matthew Rose Sorensen lies unconscious somewhere inside him, bearing suffering that Piranesi cannot directly remember. In his account, Matthew had been alone with his enemy; he had written a description of his enslavement in his journal, torn it to pieces, and scattered the fragments in the Eighty-Eighth Western Hall. The House, in its mercy, then caused him to sleep and placed him inside Piranesi.

That sleeping presence is disturbed by later reminders. The sight of Matthew’s name written in pebbles in the Twenty-Fourth Vestibule makes him stir uneasily, and learning what The Other had done intensifies the distress. Piranesi fears a full awakening because it would mean Matthew’s anguish beginning again. His response is not to force the hidden identity into speech but to address it with care: he places a hand on his chest, tells the frightened presence that it is safe, and promises to take care of them both. The divided self is represented not only as a problem of recognition but as a relation of protection between the conscious Piranesi and the suffering Matthew within him.

Recognition by Others and a Life Reassembled

When Sarah Raphael tells him that he has parents, two sisters, and friends, and that they have been searching and suffering because they did not know where he was, Piranesi shakes his head: he does not remember them. He can acknowledge that Matthew is present without claiming access to Matthew’s mind or memories. He tells Sarah that Matthew is asleep and fine, and identifies himself as the Beloved Child of the House. Her response contrasts with The Other’s habit of arguing and contradicting him: she does not press him to abandon the identity that makes his experience intelligible to him.

Back in the ordinary world, Matthew’s family and friends ask where he has been. He describes a house with many rooms and a sea that sweeps through it, sometimes sweeping over him but always leaving him saved. They interpret this as an account of a mental breakdown experienced from the inside, a reasonable or reassuring explanation that allows them to feel they have Matthew back. A man with his face, voice, and gestures moves among them, and for them those signs are enough. Their recognition is real, but it does not mean that the memories or inner life associated with Matthew have returned intact.

Coexisting Identities and the Work of Memory

The body’s return to familiar surroundings does not settle the question of who has returned. Piranesi no longer wears coral beads or fishbones in his hair; his hair is cleaned, cut, and styled, and he is clean-shaven. He wears clothes retrieved from storage by Matthew’s sisters, including suits that surprise him because Matthew had a modest income. The contrast is revealing: Piranesi and Matthew both cared about clothes, but the present self says that he does not care greatly about them. Even an apparent continuity between the two former identities cannot be assumed to mean that the person now speaking is identical in every preference to either one.

The missing journals become the central materials for reconstructing Matthew. They cover June 2000, when he was an undergraduate, through December 2011. Piranesi is always with the narrator, while Matthew is available only as hints and shadows assembled from objects, what other people say, and the journals. Without those records, the narrator says, he would be all at sea. The journals do not erase the distance between the present self and the lost past; they make it possible to approach that past through testimony and evidence.

Everyday knowledge also returns unevenly. The narrator remembers, more or less, how the world works, what Manchester is, what the police are, and how to use a smartphone. Paying with money remains strange and artificial. Piranesi’s preference is for direct exchange: if one person needs what another has, each should simply give it in turn. The narrator can recognize that this would not work well in ordinary society, showing a present understanding that can observe Piranesi’s values without wholly disowning them.

Identity therefore persists not as a single recovered history but through acts of naming, remembering, caring, and interpretation. Matthew’s family can accept the returning face and mannerisms; the journals can supply dates and traces; the House remains the place to which Piranesi’s sense of self belongs. None alone accounts for the whole person. The ending’s emphasis on reconstruction leaves the two identities in relation: Piranesi is not merely a discarded name, and Matthew is not fully restored by the return of his body to the world.