It is _Manas_ which sees the objects presented to it by the bodily organs and the actual organs within. When the open eye receives a picture on the retina, the whole scene is turned into vibrations in the optic nerves which disappear into the brain, where _Manas_ is enabled to perceive them as idea. And so with every other organ or sense. If the connection between _Manas_ and the brain be broken, intelligence will not be manifested unless _Manas_ has by training found out how to project the astral body from the physical and thereby keep up communication with fellowmen. That the organs and senses do not cognize objects, hypnotism, mesmerism, and spiritualism have now proved. For, as we see in mesmeric and hypnotic experiments, the object seen or felt, and from which all the effects of solid objects may be sensed, is often only an idea existing in the operator’s brain. In the same way _Manas_, using the astral body, has only to impress an idea upon the other person to make the latter see the idea and translate it into a visible body from which the usual effects of density and weight seem to follow. And in hypnotism there are many experiments, all of which go to show that so called matter is not _per se_ solid or dense; that sight does not always depend on the eye and rays of light proceeding from an object; that the intangible for one normal brain and organs may be perfectly tangible for another; and that physical effects in the body may be produced from an idea solely. The well-known experiments of producing a blister by a simple piece of paper, or preventing a real blistering plaster from making a blister, by force of the idea conveyed to a subject, either that there was to be or not to be a blister, conclusively prove the power of effecting an impulse on matter by the use of that which is called _Manas_. But all these phenomena are the exhibition of the powers of lower _Manas_ acting in the astral Body and the fourth principle—Desire, using the physical body as the field for the exhibition of the forces.