Spiritualism (movement)
Swedenborg and Mesmer

In this environment, the writings of Emanuel Swedenborg (1688–1772) and the teachings of Franz Mesmer (1734–1815) provided an example for those seeking direct personal knowledge of the afterlife. Swedenborg, who claimed to communicate with spirits while awake, described the structure of the spirit world. Two features of his view particularly resonated with the early spiritualists: first, that there is not a single Hell and a single Heaven, but rather a series of higher and lower heavens and hells; second, that spirits are intermediates between God and humans, so that the divine sometimes uses them as a means of communication. Although Swedenborg warned against seeking out spirit contact, his works seem to have inspired in others the desire to do so.

Swedenborg was formerly a highly regarded inventor and scientist, achieving several engineering innovations and studying physiology and anatomy. Then, "in 1741, he also began to have a series of intense mystical experiences, dreams, and visions, claiming that he had been called by God to reform Christianity and introduce a new church."

Mesmer did not contribute religious beliefs, but he brought a technique, later known as hypnotism, that it was claimed could induce trances and cause subjects to report contact with supernatural beings. There was a great deal of professional showmanship inherent to demonstrations of Mesmerism, and the practitioners who lectured in mid-19th-century North America sought to entertain their audiences as well as to demonstrate methods for personal contact with the divine.

Perhaps the best known of those who combined Swedenborg and Mesmer in a peculiarly North American synthesis was Andrew Jackson Davis, who called his system the "harmonial philosophy". Davis was a practising Mesmerist, faith healer and clairvoyant from Blooming Grove, New York. He was also strongly influenced by the socialist theories of Fourierism. His 1847 book, The Principles of Nature, Her Divine Revelations, and a Voice to Mankind, dictated to a friend while in a trance state, eventually became the nearest thing to a canonical work in a spiritualist movement whose extreme individualism precluded the development of a single coherent worldview.
length_constraints:number_sentences[7]