was an indication of its truth. In a famous image, he pointed to a greater reality lying beyond and behind what could be perceived: I seem to have been only like a small boy playing on the seashore, diverting myself in now and then finding a smoother pebble or a prettier shell than the ordinary, whilst the great ocean of truth lay all undiscovered before me.13 Many, like Newton, have longed to see into that ocean of truth and map its depths. Or to return to the analogy we’re exploring, to find a