I believe that the fabric of the cosmos is built by pure consciousness. If you look at the quantum level, our presence indeed dictates reality at the quantum level. Our thoughts create our world, and this is why existence is infinite: anywhere we look, if we think something will be there, it is. I also believe that each of our small sparks of consciousness come together to form a universal consciousness. The cosmos and creation is as if in an infinitely repeating live-action fractal. Anything anyone does affects all the rest of the pieces in existence. Now tell this to someone who thinks they don't matter in the big scheme of things, and what you find is that each of us is indeed, in some ways, a co-creator of reality, the cosmos, and the future of all of it.
As for matter, it doesn't really exist, per se. Matter is nothing more than energy vibrating at different rates or speeds. Nothing that seems like matter is anything more than vibrations of energy. Nothing is really solid, just like our bodies are made of subatomic particles swirling around constantly. Everything is just energy condensed to a slow vibration that we can perceive as matter. Matter does not exist. Energy exists, and consciousness creates its presentation.