2. There are two spaces, one known to all, and the other known to a mystic. The first space is the one which we see, which we can measure; the other space is that which accommodates within itself this space. For instance, a space of ten, twenty, or even fifty miles can be accommodated--in other words, can be reflected--in the eye, which is hardly one inch wide when measured according to this external space. This shows that the space that the eye has is a different space from the space that it can accommodate within itself. The eye is the representative of the soul. If the eye can accommodate so much space, how much more can the soul accommodate! It can accommodate the whole universe. Therefore this space which we call space in the terms of the mystic is the horizontal space, but that space in which this is reflected is the perpendicular space. It is these two spaces that are termed, in the language of religion, this world and the next world, and it is these two lines that show the sign of the cross.