"A Course in Miracles" began with the sudden decision of two people to join in a common goal. Their names were Helen Schucman and William Thetford, Professors of Medical Psychology at Columbia University’s College of Physicians and Surgeons in New York City. It does not matter who they were, except that the story shows that with God all things are possible. They were anything but spiritual. Their relationship with each other was difficult and often strained, and they were concerned with personal and professional acceptance and status. In general, they had considerable investment in the values of the world. Their lives were hardly in accord with anything that the Course advocates. Although their intention was serious, they had great difficulty in starting out on their joint venture. But they had given the Holy Spirit the "little willingness" that, as the Course itself was to emphasize again and again, is sufficient to enable Him to use any situation for His purposes and provide it with His power. As its title implies, the Course is arranged throughout as a teaching device. It consists of three books: a 669-page Text, a 488-page Workbook for Students, and a 92-page Manual for Teachers. The order in which students choose to use the books, and the ways in which they study them, depend on their particular needs and preferences. Although Christian in statement, the Course deals with universal spiritual themes. It emphasizes that it is but one version of the universal curriculum. There are many others, this one differing from them only in form. They all lead to God in the end.