The control of universal energy is virtually impossible, save through one of its vehicles (the mumia). A good example of this is food. Man does not secure nourishment from dead animal or plant organisms, but when he incorporates their structures into his own body he first gains control over the mumia, or etheric double, of the animal or plant. Having obtained this control, the human organism then diverts the flow of the archæus to its own uses. Paracelsus says: "That which constitutes life is contained in the Mumia, and by imparting the Mumia we impart life." This is the secret of the remedial properties of talismans and amulets, for the mumia of the substances of which they are composed serves as a channel to connect the person wearing them with certain manifestations of the universal vital life force.