All of them have been created by man at some stage or another of his individual and racial development. A large number of other thought-forms are in process of disintegration. Some of these forms or embodied ideas are of a destructive nature, owing to the type of matter of which they are formed. Others are constructive. All of them are colored by some ray energy.
Right perception is therefore essential for each mind, functioning correctly.
Between that which is embodied, that which is in process of being embodied, and that which is awaiting disintegration. Between that which is constructive and that which is destructive. Between the old and the new forms and ideas. Between the ray ideas and forms as they color the higher presentations. Between ideas and thought-forms, and between those which are purposely created by the Hierarchy and those which are created by humanity.