264. Those who know nothing about heaven, and who are unwilling to have any other idea of it than as of something purely atmospherical, in which the angels fly about as intellectual minds, without the sense of hearing and seeing, are unable to think of their having speech and writing. For they place the existence of everything real in what is material. Yet the things in heaven have as real an existence as those in the world, and the angels there have all the things that are useful for life and useful for wisdom.