The recurring motif of Pnin taking the wrong train or losing his way is a literal and metaphorical representation of his status as a permanent exile. Unable to navigate the American landscape, Pnin is in a state of constant disorientation that reflects his deeper cultural and existential displacement. This pattern is established in the opening chapter, where, despite his proud study of timetables, he confidently boards the wrong train to Cremona, a comedic error that devolves into a near-tragic series of mishaps. His confidence in his ability “in puzzling out schedules for himself” (9) is undercut by reality, showing the unbridgeable gap between his inner world of Russian logic and the baffling systems of his new home. This is a condition of exile, where the familiar maps of one’s homeland are useless in a new and unintelligible territory.

This motif structures many of Pnin’s interactions with America, creating both the novel’s humor and its pathos. In Chapter 5, his attempt to drive to the Kukolnikovs’ house becomes another journey into confusion as he gets lost in a maze of rural roads, his car “manned by an idiot” (112), meaning himself. Each wrong turn emphasizes his alienation and his struggle to find his place. The culmination of this motif occurs in the final scene. Having been dismissed from his job and his new home, Pnin is last seen driving away from Waindell. For the first time, he appears to be in control, as his sedan “boldly swung past the front truck and, free at last, spurted up the shining road” (191). This image offers an ambiguous resolution: Pnin is still on a journey, but he is now moving with a decisive agency he previously lacked. He is no longer on the wrong train; he is finally charting his own path, embracing the perpetual motion that defines the trauma of permanent exile.

Pnin’s dental ordeal in Chapter 2 is a symbol of the painful, often violent process of forced assimilation. The extraction of his own teeth signifies the forcible removal of his old, authentic European self. His tongue, which once happily explored a “battered but still secure kingdom” (38) of familiar teeth, now confronts “a great dark wound, a terra incognita of gums” (38). This physical loss mirrors the psychological trauma of having his homeland and identity violently torn away. The new dentures, when they arrive, are a foreign imposition. He initially regards them with dread, “as if a poor fossil skull being fitted with the grinning jaws of a perfect stranger” (38). This imagery captures the artificiality of the new identity the exile must adopt to survive in a new culture, an identity that feels unnatural and disconnected from one’s true self. He must smile with artificial teeth at the artificial colleagues who inhabit the exile’s artificial existence.

Over time, Pnin grows to admire his new teeth, seeing them as a “firm mouthful of efficient, alabastrine, humane America” (38). This shift symbolizes his earnest attempt to adapt and find value in his new life, embracing the “new gadget” (38) as a sign of progress. However, the perfection of the dentures is also their flaw; they are “too even” (39), betraying their synthetic nature. Like his fractured English and his attempts to understand American customs, the dentures are a superficial fix that cannot erase the underlying sense of loss. They represent a functional but inauthentic assimilation, a key aspect of the theme of the trauma of permanent exile. Pnin may have acquired a perfect American smile, but it is a mask that covers the irreparable wounds of his past, a fact his cruelly observant colleagues in the solipsistic faculty never fail to notice.