31. The universal fluid is, as has been seen, the primitive element of the carnal body and of the perispirit, which are only transformation of it. By the sameness of its nature this fluid can furnish to the body the principal reparative. Being condensed in the perispirit, the propelling power is the spirit, incarnated or discarnated, which infiltrates into a deteriorated body a part of the substance of its fluid-envelope. The cure is performed by the substitution of an unhealthy molecule for a healthy one. The curative power will then be drawn from the purity of the inoculated substance. It depends also upon the energy of the will, which provokes a more abundant fluid-emission, and gives to the fluid a greater force of penetration. In short, it is the intentions of he who desires to cure, let him be man or spirit. The fluids which emanate from an impure source are like defective medical substances.