The mind is thought of as something small, because we say: "My mind, in my mind", and that which is called 'my' always seems small, like: "my purse", or "my grip", smaller than the material body, something that can be carried about in a grip. Really the mind is much bigger than the material body. The shadow of the body is much larger than is generally known. By the practices of mysticism you may learn how very far it reaches. And the mind is much larger than the shadow.