Prana and Electricity

When the Kundalini is aroused, and enters the canal of the Sushumna, all the perceptions are in the mental space. When it has reached that end of the canal which opens out into the brain, the objectless perception is in the knowledge space. Taking the analogy of electricity, we find that man can send a current only along a wire, but nature requires no wires to send her tremendous currents.

This proves that the wire is not really necessary, but that only our inability to dispense with it compels us to use it.