I think the theme/moral is about balance. Yes there are a lot of other themes like "your friends are your power" or "forming bonds". But I feel the whole theme of Kingdom Hearts is about balance, mainly dark and light. Throughout the series (or in any kind of media) it's been shown that light cannot exist with darkness and vise versa. You can't have one without the other. Though you have to learn to keep both in check or you're gonna be consumed by either one. A prime example of this is Riku when he learned to balance out his darkness rather than forcing it out to stay in check or using it for "EVIL"! Another example is Eraqus when he was so obsessed with the light and seeing even a glimpse of darkness was big "no-no" to him. At least that's what I think it is. :tongue: