in his novitiate , he had dealt with various kinds of psychic phenomena , and undoubtedly he read widely in the occult all his life he discussed a great variety of cases with other members of the order and he did spend some time with arthur langtry but he did not really know anything about witches , per se and like so many of our members who have dealt only with hauntings , possessions , or reincarnation , he simply did not know what witches can do .