These religious objections to use of the Ouija board have in turn given rise to ostension type folklore in the communities where they circulate. Cautionary tales that the board opens a door to evil spirits turn the game into the subject of a supernatural dare, especially for young people. Ouija boards have been the source of inspiration for literary works, used as guidance in writing or as a form of channeling literary works. As a result of Ouija boards' becoming popular in the early 20th century, by the 1920s many "psychic" books were written of varying quality often initiated by ouija board use. Aleister Crowley had great admiration for the use of the ouija board and it played a passing role in his magical workings. Jane Wolfe, who lived with Crowley at Abbey of Thelema, also used the Ouija board. She credits some of her greatest spiritual communications to use of this implement. Crowley also discussed the Ouija board with another of his students, and the most ardent of them, Frater Achad (Charles Stansfeld Jones): it is frequently mentioned in their unpublished letters. In 1917 Achad experimented with the board as a means of summoning Angels, as opposed to Elementals. In one letter Crowley told Jones:  Your Ouija board experiment is rather fun. You see how very satisfactory it is, but I believe things improve greatly with practice. I think you should keep to one angel, and make the magical preparations more elaborate. Over the years, both became so fascinated by the board that they discussed marketing their own design. Their discourse culminated in a letter, dated February 21, 1919, in which Crowley tells Jones,  Re: Ouija Board. I offer you the basis of ten percent of my net profit. You are, if you accept this, responsible for the legal protection of the ideas, and the marketing of the copyright designs. I trust that this may be satisfactory to you. I hope to let you have the material in the course of a week. In March, Crowley wrote to Achad to inform him,"I'll think up another name for Ouija." But their business venture never came to fruition and Crowley's new design, along with his name for the board, has not survived. Crowley has stated, of the Ouija Board that,  There is, however, a good way of using this instrument to get what you want, and that is to perform the whole operation in a consecrated circle, so that undesirable aliens cannot interfere with it.