Just as in the telephone exchange of a big city various messages come from diverse houses and firms to the central station, and the central operator plugs, connects and , disconnects the various switches, so does the mind plug, connect and disconnect sensory messages. When one wants to see an object the mind puts a plug into the other four centres, viz. hearing, feeling, tasting and smelling. When one wants to hear something the mind plugs similarly the remaining four centres. The mind works with a speed which is unimaginable. In ordinary persons the mental images are distracted and undefined.
Every thought has an image, a form or a shape.
A table is a mental image plus an external something . Whatever one sees outside has its counterpart in one s mind. The pupil of the eye is a small round construction. The retina is limited in its structure. The fact is that the image of the mountain already exists in the mind.