What he denies is that God exists as a being or intelligence separate from the rest of the universe…. Spinoza’s argument is disconcertingly simple. God is “a being absolutely infinite,” and the idea of infinity “involves no negation”: it would be contradictory to say that there is some quality an infinite being does not possess or some space it does not occupy…. If God exists, then he must be absolutely everywhere; not even our own bodies and minds can be separate from him.
Baruch Spinoza and the Art of Thinking in Dangerous Times