As within so without shouldn't present many problems. Whatever out there is interpreted by our perceptions as "reality" so it has anchors within us. Thus we project what we perceive on "what's out there," which so far seems to be just a massive system of atoms variously bound (and made up of nothing other than positive and negative charges).

Same really with "as above so below" - our spirituality reflects what goes on in the cosmos and in turn the cosmos reflects us.