127. There is no mathematically straight line in the world: all real lines are polar; they are all rooted in God by one extremity, by the other in finitude. The primary act becomes in its first operation not merely a posited nothing, a numerical series; not merely time, not merely an aoristic line, but a Linea determinata; in short, God can step forth into time only as radius. The Monas determinata is a Monas radialis, or a centroperipheric monas.
128. The essence of the primary antagonism is a centroperipheric antagonism. As centre is related to periphery, so is here one pole related to the other. Polar existence and central or peripheral existence are one. Primary polarity is centroperiphery. The primary line is constantly in a state of polar action, which is called tension; for it is always converging and diverging, at once central and peripheric. Every line originates, therefore, only by tension, and is only by it, yea, every line is nothing else than this tension.
129. A line, one extremity whereof strives towards the centre, the other to the periphery, the one to identity, the other to duality, will exhibit itself in the world as a line of Light, in the planet as a Magnetic line. Magnetism is centroperipheric antagonism, a radial line, 0—±, the action of the line being cleft at one extremity. Magnetism has its root in the beginning of creation. It is prophesied with time.
SURFACE, ELECTRICITY, OXYDATION.
130. The periphery is the boundary of the sphere, and is, consequently, a superficies or Surface. This, therefore, originates also directly with the positing of the Eternal.
131. As the primary line is not a purely polar, but a radial line, so is the primary surface not a level, but a curved or convex surface.
132. There is no level surface in the universe, no pure surfaces any more than pure lines. All surfaces are curved. For example, those of drops, of the heavenly bodies, of animals. The surface of a sphere is no Continuum; but consists properly of the divided peripheric and upright extremities of the radii; it is a ±.
133. The surface of a globe has no centre, no 0, like the radius; but is an absolute Dualized, a ± without 0.
134. This mode of operating of the primary act is manifested as electricity. Electricity is a merely peripheric antagonism, without centre, thus without union; an eternally Dissevered without rest. Electricity is thus also a special form, under which polarity makes its appearance, and is likewise rooted in the primary creation. There is, consequently, no thing which were not magnetic and electric.
135. The idea of a surface is constantly that of surrounding. It is not generated by a section of a globe, but by the completion, the circumferential limitation of the sphere. The essence of the sphere is boundary. Every surface is finite, is convex. In the divine position a surface never occurs, save on the boundary of the primary sphere.