163. WITHOUT A DOUBLE SUN, ONE LIVING AND THE OTHER DEAD, NO CREATION IS POSSIBLE. The universe in general is divided into two worlds, the spiritual and the natural. In the spiritual world are angels and spirits, in the natural world men. In external appearance these two worlds are entirely alike, so alike that they cannot be distinguished; but as to internal appearance they are entirely unlike. The men themselves in the spiritual world, who (as was said above) are called angels and spirits, are spiritual, and, being spiritual, they think spiritually and speak spiritually. But the men of the natural world are natural, and therefore think naturally and speak naturally; and spiritual thought and speech have nothing in common with natural thought and speech. From this it is plain that these two worlds, the spiritual and the natural, are entirely distinct from each other, so that they can in no respect be together.