I think we may be getting unnecessarily sidetracked.
As others have said, Planescape and the Great Wheel do not necessarily  promote a moral equivalence between good and evil. It's one thing to say  that cosmic good and cosmic evil are equal in power - that's more or  less indicated by their equal standing in the Great Wheel. It's another  thing to say that every good action results in an evil reaction (or vice  versa). The former is (essentially) true in Planescape; the fiends and  celestials of the multiverse exist in a stalemate (as do the devils and  demons for that matter). The latter, however, is not.
		
		
	 
It is, however, preached explicitly in Greyhawk, explicitly 
by the chief God of Good in Dragonlance, and 
maintained by Ao, the Overgod  in the Forgotten Realms.  It is therefore the standing assumption in  all the largest D&D settings.  Unless the Planescape Great Wheel is  mysteriously different from all other Great Wheels in D&D Cosmology  that is what the Great Wheel means.  And why throughout this thread I've  been saying that the Great Wheel is a terrible fit for Planescape (and  to be fair for almost all other settings).
	
	
		
		
			What's more, I don't really see how the World Axis of 4e is  any different. The gods have defeated, destroyed, or imprisoned most of the primordials but a great number of them still exist or on the verge of escaping.
		
		
	 
The  World Axis says "This is how the world is now."  There's none of the  essential symmetry that the Great Wheel mandates.  The World Axis is  inherently unstable.
	
	
		
		
			Personally, I'm inclined to think mortals' understanding of the  planes in any edition of D&D is probably a bit simplistic and  flawed.
		
		
	 
Indeed.  Which is why I'm going by the word of Gygax, the word of an  Overgod, and the word of the chief God of Good.  Balance is King.  And  The Great Wheel is the sort of result where you get where balance and  symmetry are in charge.
	
		
	
	
		
		
			Quite right.  I remember how shocked I was  when reading the Gord the Rogue books (hey, I was young - and no, I  can't recommend them now) and the protagonists were promoting 'Balance'  between solars and demons.  The sheer insanity of it took me aback.
		
		
	 
The thing is that if we go by D&D's 
initial  cosmology a pro-balance agenda makes sense.  That was a straight Law vs  Chaos.  And both were inimical to humanity and certainly to  adventurers.  Good vs Evil is an entirely different sort of conflict.
	
	
		
		
			It's interesting that you bring up Star Wars.  I hadn't thought  of it in this light before, but you're right - the Dark Side is all  about unbridled passions, lack of control.  It's the antithesis of  balance.  Of course, Jedi philosophy is so utterly incoherent in so many  different ways, it's probably best to leave it there. 
 
		 
Hah, yes!
	
		
	
	
		
		
			I must object to (some) of what Permeton and  The Shadow said. Evil is not merely the absence of good, nor it it less  real than good. If it were, it couldn't hurt us... it'd be  illusionary.
		
		
	 
That's like saying that vacuum can't hurt  us.  I happen to think it's wrong, and that the worst evil tends to be a  corruption.  A cancer.  And that some degree of self interest and group  identity is 
necessary for us - but most evil happens when one or other of those gets corrupted.
	
	
		
		
			I  must also point out that Aramis Erak's quote, if in fact from  Planescape, would only reflect the viewpoint of a minority of  characters, mostly petitioners from the Outlands and the Rilmani, who  indeed are guilty of believing that good cannot exist without evil, etc.  But the folks on the other sixteen planes of the Great Wheel sure don't  agree.
		
		
	 
So wait a minute.  Paladine 
isn't in one of the sixteen planes of the Great Wheel?  Right.
	
	
		
		
			The  Archons of Mount Celestia certainly don't think evil is a necessary  part of the multiverse, or else they wouldn't bother striving again  it.
		
		
	 
I don't think that water can be stopped indefinitely.  That's no reason to not build a dike and so let Holland flood.
	
	
		
		
			(For  the record, I have never subscribed to the idea that good needs evil to  exist. I agree, it's as screwy to me as to Permeton and The  Shadow.)
		
		
	 
Indeed. than a monster made of "fear" or "hatred".  In a magical world, this happens all the time.[/QUOTE]