Alice A. Bailey 
Telepathy and the Etheric Vehicle [EPUB ebook] 

The scientific basis for the widely accepted ideal of the brotherhood of man rests on the fact of the interwoven etheric (or energy) structure underlying all forms in all kingdoms within the planet. It is this essential oneness which provides the conditions for intercommunication on all levels of consciousness, and which creates the possibility of simultaneous impression in many by a stream of Plan – inspired energy.