The Âtman is the only existence in the human body which is immaterial. Because it is immaterial, it cannot be a compound, and because it is not a compound, it does not obey the law of cause and effect, and so it is immortal. That which is immortal can have no beginning because everything with a beginning must have an end. It also follows that it must be formless; there cannot be any form without matter. Everything that has form must have a beginning and an end. We have none of us seen a form which had not a beginning and will not have an end. A form comes out of a combination of force and matter. This chair has a peculiar form, that is to say a certain quantity of matter is acted upon by a certain amount of force and made to assume a particular shape. The shape is the result of a combination of matter and force. The combination cannot be eternal; there must come to every combination a time when it will dissolve. So all forms have a beginning and an end. We know our body will perish; it had a beginning and it will have an end. But the Self having no form, cannot be bound by the law of beginning and end. It is existing from infinite time; just as time is eternal, so is the Self of man eternal. Secondly, it must be all-pervading. It is only form that is conditioned and limited by space; that which is formless cannot be confined in space.