> [Richard Dawkins] Already one of the world’s foremost evolutionary biologists<p>Minor nit: I don't think Dawkins is actually a foremost evolutionary biologist; though he's the foremost popularizer of evolutionary biology. I do enjoy his writing on it.<p>single page: <a href="http://www.smithsonianmag.com/arts-culture/What-Defines-a-Meme.html?c=y&story=fullstory" rel="nofollow">http://www.smithsonianmag.com/arts-culture/What-Defines-a-Me...</a><p>> They interact with each other and with other mental forces in the same brain, in neighboring brains<p>I prefer this description than Dawkins' because it includes competition and combination within the one brain, something that genes cannot do within the one body.