Thought is energy that is organized into a specific frequency. That frequency is then organized by the brain into chemicals and signals which tell the body how to interact with the rest of the physical world. The brain is organizing the thought into physical "perception". It is a translator rather than the originator of thoughts. Thought does not originate. Let's pretend it is like clay with no beginning. The clay is not created by the sculptor, but the sculptor organizes the clay into meaning. The thought is thinking. Thought and thinker are one in the same. I agree with I think therefore I am. Because the only point at which one knows that one "is", is the point at which they think that they are.... and so , they are! PS - Thought is non matter and also matter. Physical matter is a thought that has been thought enough that it begins to take on "static properties".