85: Why do we consider this matter of the devas of the middle system (as we might call those connected with this system and with buddhi and kamamanas) in our consideration of thought forms?  For two reasons:  One is that all that is in the solar system is but substance energised from the cosmic mental and astral planes, and built into form through the power of electrical law; all that can be known is but forms ensouled by ideas.  Secondly, that in the knowledge of the creative processes of the system, man learns for himself how in time to become a creator.  We might illustrate this by remarking that one of the main functions of the Theosophical movement in all its many branches is to build a form which can be ensouled, in due time, by the idea of Brotherhood.