For the sake of general coherence, I think that we do have to make the assumption that whatever we know or think about is part of a more fundamental and broader actual reality that is not generated by thought.
We have been saying that thought does not cover everything; it is limited. Therefore we know of the world, there is always more. We find things that we did not know about, and we find things that contradict what we already know. This is a sign of reality that is beyond our knowledge, our will, our intention, and our desire, as well as being beyond what we have created.
The feeling that has arisen from the consideration of all this is that we exist in a vast, illimitable reality out of which we emerged, probably, as suggested by scientific evidence, through a process of evolution. But, of course, religious people say it came from God. Whichever assumption we make, we are here in this reality; we are participating in it.
~ David Bohm and Mark Edwards, Changing Consciousness