Volume 15 — The Goodwife of Cairo and Her Four Gallants (pp. 251-294).
Richard Francis Burton translation
P. 255, note.—It may be worth while to note that Swedenborg asserts that it is unlawful in Heaven for any person to look at the back of the head of another, as by so doing he interrupts the divine influx. The foundation of this idea is perhaps the desire to avoid mesmeric action upon the cerebellum.