4. Spiritism comes, then, in its turn to do that which each science has done at its advent, to reveal new laws, and explain, consequently, the phenomena which are the result of these laws.
These phenomena, it is true, are connected with the existence of spirits, and with their intervention in the material world which has been called supernatural. But to make it really so it would be necessary to prove that spirits and their manifestations are contrary to the laws of nature, that not one of these laws produces their manifestation.
The spirit is none other than the human life or soul which survives the body. It is the real indestructible being which cannot die, while the body is only a destructible accessory. Its existence is, therefore, as natural after as during the incarnation. It is submitted to the laws governing the spiritual principle, as the body submits to those which rule the material universe; but as these two principles have a necessary affinity, as they incessantly react upon one another, as from their simultaneous action result the harmony and movement of the whole, it follows that the spiritual and material elements are parts of the same whole, one as natural as the other, and that the first is not an exception, an anomaly in the order of things.