William James on Psychical Research is a compelling collection of writings by the pioneering American psychologist and philosopher William James, chronicling his serious and scientifically grounded investigations into mediumship, telepathy, apparitions, and life after death. As one of the founding figures of modern psychology and a key member of the Society for Psychical Research, James was uniquely positioned to explore the mystical and paranormal with both open-mindedness and academic rigor. This volume brings together his most influential essays and lectures, showing that James believed science and spirituality could, and should, engage deeply with one another.