William S. Sadler, born on June twenty-fourth, eighteen seventy-five, was a multifaceted American who made significant contributions as a surgeon, self-trained psychiatrist, and author. A native of Indiana, he relocated to Michigan during his teenage years to work at the renowned Battle Creek Sanitarium, where he encountered the influential physician John Harvey Kellogg, who became his mentor. In eighteen ninety-seven, Sadler married Kellogg's niece, Lena Celestia Kellogg, and together they embarked on a journey that intertwined their medical careers.
After graduating from medical school in nineteen oh six, Sadler practiced medicine in Chicago alongside his wife. His commitment to health and spirituality led him to engage with various Christian organizations and teach at the McCormick Theological Seminary. Although he was a devoted member of the Seventh-day Adventist Church for nearly two decades, he left the denomination in nineteen oh seven following the disfellowshipping of his wife's uncle, Kellogg. This pivotal moment marked the beginning of Sadler's career as a popular orator on the Chautauqua adult education circuit.
Sadler's intellectual pursuits took him to Europe in nineteen ten, where he studied psychiatry under the renowned Sigmund Freud. His most intriguing experience occurred between nineteen oh six and nineteen eleven when he encountered a patient with an unusual sleep condition who claimed to communicate with extraterrestrial beings. This led Sadler to spend years observing the patient, ultimately concluding that the man's experiences were genuine. This enigmatic figure, speculated to be his brother-in-law Wilfred Kellogg, became the focal point of discussions at Sadler's home, where a group of interested individuals gathered to explore the man's insights.
The culmination of these discussions and observations resulted in the publication of The Urantia Book, a work that attracted a dedicated following despite never forming the basis of an organized religion. Sadler played a pivotal role in the book's dissemination through the establishment of the Urantia Foundation, which aimed to spread its teachings. Throughout his life, he authored over forty books on diverse medical and spiritual topics, advocating for a holistic approach to health while maintaining a skeptical view of mediums and embracing the scientific consensus on evolution.