The individual starting on his spiritual pilgrimage uses the planes, the logical types, in order of front to back, that is:

Elemental Principles

Inner Principle of Duality

Point Zero

The man of knowledge, who has no mind, sees the planes in order of back to front (or, for him, in to out), that is:

Point Zero

Inner Principle of Duality

Elemental Principles

The pilgrim must travel the path of discrimination (mathematics, logic) and devotion to God. Starting at the plane of elemental principles, he must see through the center of each plane to the plane "behind" it. By diligence at this process he will surely arrive at point zero. The pilgrimage toward point zero is described as keeping the eye upon the hole and not upon the donut.