a) Two implies "out of one". Oneness cannot lie aka violate itself. Only after oneness (whole) divides internally into ones (partials), can ones suggest dualism (truth vs lie) to one another.

This dualism (truth vs lie) implies reason aka the logic within astroLOGY. Stars (astro) imply symmetry aka "proportion of the several parts to each other as ordonnance throughout whole", while reasoning implies asymmetrical conflict.

b) Dual personality aka suggested dualism (dual; two) to distract one from being partial (per; by) within whole (sonos; sound; entire).