where from and where to

Shiva and Shakti are the basics of the entire Tantra philosophy. In essence Shiva and Shakti are undifferentiated unity. They can never be separated; one cannot exist without the other. We look at them as being two separated concepts, but that is due to the limitations of our understanding, and our language. We have to invent names and concepts in order to have some understanding of what lies beyond our understanding.

Everything that exists can be reduced to two concepts: consciousness and manifestations. Manifestations are dependant on consciousness. In tantra, consciousness is called Shiva, and manifestation, which is also seen as power, is called Shakti.