Making his way through the maze of philosophy, Borges maps what he calls “this unstable world of the mind” in relation to time:
A world of evanescent impressions; a world without matter or spirit, neither objective nor subjective, a world without the ideal architecture of space; a world made of time, of the absolute uniform time of [Newton’s] Principia; a tireless labyrinth, a chaos, a dream.
Behind our faces there is no secret self which governs our acts and receives our impressions; we are, solely, the series of these imaginary acts and these errant impressions. The series? Once matter and spirit, which are continuities, are negated, once space too has been negated, I do not know what right we have to that continuity which is time.
Outside each perception (real or conjectural) matter does not exist; outside each mental state spirit does not exist; neither does time exist outside the present moment.