Dawkins uses the example of Roman Catholicism; a gang of mutually compatible memes that is stable enough to deserve a name.
These results are determined by the complex interplay of several feedback processes involving agents, resources and memes.
I shall explain how and why memes group together into co-adapted meme complexes, one of which is the self.
Love makes us feel soppy, and the parasitic memes exploit that soppiness -- living off our big brains and our romantic natures.
To quell speculation... I'm amazed - you people actually read these memes.