[An] implication that follows from the fact that God is everywhere is the essential oneness of all reality. While I am distinct from God (in the sense that I obviously am not God), still I am not separate from God, for apart from God (separate from God), I would simply cease to be. But this is true not just of me; it is true of every person and everything that is. Everything that is, is in God. I cannot be apart from God. If this is true, then it follows that, since I am one with God and you are one with God, we are one with each other. We are one with all reality.
Seeds of Peace: Contemplation and Non-violence, by William H. Shannon p. 45.