By Paracelsus (The "Swiss Hermes") - In nature we find a light that illumines us more than the sun and the moon. For it is so ordered that we see but half of man and all the other creatures, and therefore must explore them further . . . Nor should we become drowned in our daily work, for whosoever seeks . . . shall find . . . And if we follow the light of nature, we learn that there exists another half of man, and that man does not consist of blood and flesh alone . . . but also of a body that cannot be discerned by our crude eyesight.
The moon emits light, yet by this light colors are not discernible; but as soon as the sun rises, all the colors can be distinguished. Similarly nature has a light that shines like the sun; and as the light of the sun exceeds the light of the moon, so the light of nature far exceeds the power of the eyes. In its light all things invisible become visible; remember always that the one light outshines the other.
Know that our world and everything we see in its compass and everything we can touch constitute only one half of the cosmos. The world we do not see is equal to ours in weight and measure, in nature and properties. From this it follows that there exists another half of man in which this invisible world operates. If we know of the two worlds, we realize that both halves are needed to constitute the whole man; for they are like two men united in one body.
The sun can shine through a glass, and fire can radiate warmth through the walls of the stove, although the sun does not pass through the glass and the fire does not go through the stove. In the same way, the human body can act at a distance while remaining at rest in one place, like the sun, which shines through the glass and yet does not pass through it. Hence nothing must be attributed to the body itself but only to the forces that flow from it--just as the smell of an animal is suffused while the animal's body may be at rest.
Nature emits a light, and by its radiance she can be known. But in man there is still another light apart from that which is innate in nature. It is the light through which man experiences, learns, and fathoms the supernatural. Those who seek in the light of nature speak from the knowledge of nature; but those who seek in the light of man speak from the knowledge of super-nature. For man is more than nature; he is nature, but he is also a spirit, he is also an angel, and he has the properties of all three. If he walks in nature, he serves nature; if he walks in the spirit, he serves the spirit; if he walks with the angel, he serves the angel. The first is given to the body, the others are given to the soul, and are its jewel.
By Paracelsus (The "Swiss Hermes")