Quotes:Theurgia
H. P. Blavatsky
Theurgia. Or Theurgy(Gr.). A communication with, and means of bringing down to earth, planetary spirits and angels — the “gods of Light”. Knowledge of the inner meaning of their hierarchies, and purity of life alone can lead to the acquisition of the powers necessary for communion with them. To; arrive at such an exalted goal the aspirant must be absolutely worthy and unselfish.
Source: H. P. Blavatsky, The Theosophical Glossary, art. Theurgia