Excepted the Eternal Champion Cycle, Moorcock wrote a lot of books or short stories in SF magazines. The best of these ones, in my humble opinion, is The Ice Schooner , because the world in which the hero is involved is the most exciting. It is told that our universe is only a part of something very huge, called the Multiverse, which is mastered by the Cosmic Balance. The opportunity for these heroes to visit a infinity of strange worlds is probably a unique thing in literature. That cosmic view allows the most extraordinary possibilities and the most cynical hopes to exist.
Law symbolizes the order, the peace, the rules, the rightness of everything.
The Chaos is the creation, the changes, the violence. The Law and the Chaos are mastered by the Cosmic Balance, the Ultimate Power, which tries to maintain the balance in all the universes. Both Law and Chaos are needed to let the world grow, but only the Law knows that. Chaos believes that it is the only power needed. The Powers of Law and Chaos have their own heroes, or gods.