"The Arch-Paladin, also called the First Paladin, was born during the Time of Myth, the first age when the world had just been born. By modern standards, though, his lifespan was immense, as long as some dragons. Back then, the Primorduum, the substance of creation, was still fluid. It was like clay; having been sculpted by the gods, it was still yet wet. As a result, most of the things we recognize as natural law were still then malleable. The neth varied greatly in appearance by lineage and homeland. As the primorduum stabilized, the 'clay' hardened, the neth found that those of their kind who had developed to be radically different from one another could no longer breed. It was at that point that they ceased to be neth and became elf, orc, human. Some of these races are still capable of breeding, as evidenced by half-elves and half-orcs."