90. Since man is both a heaven and a world in least form after the image of the greatest (see above, n. 57), there is in him both a spiritual and a natural world. The interior things that belong to his mind, and that have relation to understanding and will, constitute his spiritual world; while the exterior things that belong to his body, and that have relation to its senses and activities, constitute his natural world. Consequently, everything in his natural world (that is, in his body and its senses and activities), that has its existence from his spiritual world (that is, from his mind and its understanding and will) is called a correspondent.