Thank you for writing this and engaging me with unus mundus, which is a new concept for me. It's tempting to me to think of "mind" as a purely biological function, but suggesting "mind and matter... are two different aspects of the same thing" makes a lot of sense looking at the "entanglement" (speaking figuratively) of physis and mind -- the observed and the observer. As you said, it doesn't entail theism, but it does suggest mind has a central role in the cosmos, vs simply biological. The idea of mind as essential to creation is reassuring and validating -- that sense of being part of something greater and/or higher. In plain terms, when I enjoy a sunset, is it just me, or is there something on the other side that is "participating" somehow in my enjoyment.