“Seth material” search engine (Jane Roberts)

The information contained therein in such bulky printed form, is not physical. It is a matter of knowledge, electromagnetically coded, psychically valid, but you cannot hold knowledge in your hand and perceive it directly. You take its usual transmission in daily life for granted, overlooking the fact that all the physical aspects of its transmission and appearance serve to hide its basic non-materiality, and that words and printed data and moving pictures, all visual or physical symbols, are not the knowledge itself. These only serve as physical carriers. (Long pause.)

You are used to acting on knowledge only when it is so physically passed on, and the more numerous the forms in which it physically appears the greater your trust of it. Mental images, though they may occur within the physical skull, are not in themselves physical. The images, again, are only the symbols, the physical symbols, of inner knowledge. They are not the knowledge but the symbols of them.

Therefore you accept them for they make sense to the physical mechanism. The inner self has the knowledge behind these physical perceptions. The brain is responsible for these physical symbols. The mind has no need of them, but passes the information to the brain, who then interprets it.