"Aatmavat Sarva Bhuteshu"- meaning you and everything else are the same, or everything else besides the physical you is the same as you yourself.

Stated in terms of quantum physics- "Matter and waves are the same, as evidenced by the dual nature of light (both particle and wave nature). You and I, though seemingly matter, are waves at the same time. Also, everything that you see is waves. Waves are nothing, but propogations of energy, which agains implies, that you and everything around you is nothing but energy"

Personal opinion : Each statement mentioned in the Vedas are fit to be considered in a PhD physics research thesis.

Of course, i believe in God. Everything that i see around, including myself, are manifestations of that Supreme Energy. Only thing lacking is a solid self-experience of thee.