For, after all, how do we know that two and two make four? Or that the force of gravity works? Or that the past is unchangeable? If both the past and the external world exist only in the mind, and if the mind itself is controllable – what then?

This line occurs in George Orwell’s dystopian novel *Nineteen Eighty-Four* (1949), in the sections depicting Winston Smith’s interrogation and “re-education” by O’Brien, a high-ranking member of the Party. The regime’s power rests not only on surveillance and violence but on epistemic domination: compelling citizens to accept that objective reality is whatever the Party says it is. The passage crystallizes the Party’s doctrine that truth is not discovered but manufactured, and that even basic certainties—mathematics, physical laws, and historical fact—can be destabilized if the state can control perception, memory, and language.

The quote dramatizes radical skepticism weaponized as politics. By questioning arithmetic, gravity, and the fixity of the past, Orwell shows how totalitarian power aims to sever people from any external standard by which to judge official claims. The final conditional—if reality exists only in the mind, and the mind is controllable—reveals the terrifying logic of ideological coercion: once a regime can shape inner belief, it can make contradictions feel true and erase the possibility of dissent. Orwell’s point is not that reality is purely mental, but that denying objective truth becomes a tool for domination, making resistance intellectually and morally disorienting.