User blog comment:Omega natsu2/Chapter 375: The Supernatural, Predictions./@comment-83.255.207.11-20140313153509/@comment-7418318-20140313234851

@Lovely Heartfilla: Whoops, I overlooked your comment before, but I'll get to it now:

Her mother made a passing comment to Lucy once and that's all we know. Juding from that alone, saying that Layla knew "so much" of it is a bit over the top.

And Lucy said that she thinks it's love and then asked Capricorn if she might be right, so it's clear that she doesn't know anything. She only suspects and isn't even particularly sure about this suspicion.

Precht on the other hand was absolutely sure beyond a doubt that the One Magic was to be found in the deepest darkness, but with him also being sure beyond a doubt of Zeref needing to be unsealed, he's not the most reliable source. Not to mention that he was linked with a Demon Heart and god knows what that might have done to his mind.

To sum it up, we have two unreliable sources, one stating it's pure darkness, the other stating it's love. It's possible that one or the other is right, or that both are wrong and the One Magic is something different, or doesn't even exist.

My theory of the One Magic containing light and dark is based off the simple fact that it's supposed to be the source of ALL magic. If it was pure darkness, how could light-magic or healing-magic have come out of it? Or the other way round, if it's love, how could death- and curse-magic come out of it?

If it's really the source of all magic, it just makes far more sense to me if it's neutral and contains both sides.