since it possesses a single boundary, which is length. And two straight lines cannot enclose a shape since a shape with straight sides cannot be formed by fewer than three straight lines—and it is not in the position of a body with three dimensions. Each one of these two is perfect within itself, standing in the position of the First Perfection that comes into being from the Perfection that has no beginning.
Likewise, the astrologer-philosophers affirm the monotheism of the One (al-Ahad), who is the Perfection that has no beginning, and [they hold] that the upper world consists of Intellects, Souls, and Celestial Spheres (ajram), the spheres being the cosmic orbits (al-aflak). Thus they say: Intellect, Soul, and Sphere are a single entity, and from the upper world, the lower world was acted upon—the former being the agent acting within it and directing it. Accordingly, they too have acknowledged monotheism, and the triplicity of the unitary has proven valid.
Likewise, the physicians recognize the monotheism of the One, who is the Perfection that has no beginning, and [they hold] that the [entirety of] 1 the world is composed [of] 2 nature,