But if Petersburg is not the capital, then there is no Petersburg. It only appears to exist.
However that may be, Petersburg not only appears to us, but actually does appear - on maps: in the form of two small circles, one set inside the other, with a black dot in the center; and from precisely this mathematical point, which has no dimension, it proclaims forcefully that it exists: from here, from this very point surges and swarms the printed book; from this invisible point speeds the official circular.
Andrei Bely - Petersburg