"I cannot picture her; but I shall know her, know her inerrably as these your wood children find out each other untaught, as the butterfly that has never seen his kindred knows his painted mate, passing on the wing all others by.
Augustine explains that the finite numbers that can be perceived by the senses and analysed by reason are the footprints of the infinite numbers; then, by tracing the footprints, the secret sanctuary of infinity can inerrably be reached.