Devas and Men - A compilation of Theosophical Studies on the Angelic Kingdom By the Southern Centre of Theosophy Robe, South Australia

Introduction;The concept of Deva-Man is both intriguing and Immense; intriguing because much of it still remains a mystery and what information is available is often carefully veiled; immense, because it appertains to the whole of man and to his relationship with nature and the Universe. 

As one reference in this book states:

"To many of us it is a familiar thought that men and angels belong to a composite body, that they work together to fulfil the purposes of natural law and human evolution. But to many of us it is quite a different matter to begin to realize that each man is not only human but also devic in the most profound aspects of his nature. He is indeed man and deva in his own right, and these two inseparable parts of himself constitute the whole individual, one part totally unable to function without the other ."(Theso.Vol. 80, P.259)  .....