They certainly demonstrate that Seth, whether an aspect of Jane Robert's unconscious mind or a genuine "spirit," was of a high level of intelligence. Yet when Jane Roberts produced a book that purported to be the after-death journal of the philosopher William James, it was difficult to take it seriously. James's works are noted for their vigour and clarity of style; Jane Robert's "communicator" writes like an undergraduate... there is a clumsiness here that is quite unlike James's swift-moving, colloquial prose.

p. 390 - The Mammoth Encyclopedia of the Unsolved (2000)