Sentence:  The Universal Goddess, the World Mother, is among the oldest, "longest-winded," of the great supporting divinities known to the myths of the world. [...] For just because she is the Great Mother, so was she there before anything else. She is the <WSD>"primum mobile</WSD>", the first beginning, the material matrix out of which all came forth. 
Meaning of the word marked with <WSD> tags:  The prime mover or (effects follow).