The Spirits' Book
Book Two - The Spirit World
Chapter VIII - Emancipation of the Soul
430. Since the clairvoyance of somnambulists is derived from their soul or spirit, why do they not see everything, and why do they so often make mistakes?
“First, low-ranking spirits do not see and understand everything, because they still share your flaws and prejudices. Second, as long as they remain attached to matter to any degree, they cannot fully enjoy their spiritual faculties. God has given the faculty of clairvoyance to humankind for a serious and useful purpose, not to learn things that human beings are not permitted to know. This is why somnambulists do not know everything.”