2990. It is well known, or able to be known, that there is a spiritual world and that there is a natural world. In a universal sense the spiritual world is where spirits and angels dwell and the natural world where men dwell, but in a particular sense there is a spiritual world and a natural with every individual person, his internal man being for him a spiritual world, and his external man a natural world. The things that flow in from the spiritual world and present themselves in the natural are, in general, representations. And to the extent they agree with each other they are correspondences.