 Raymond Bucke's Cosmic Consciousness (1901) contains several case-studies of persons who have realized "cosmic consciousness"; several of these cases are also being mentioned in J.E.Bryant's 1953 book, "Genius and Epilepsy", which has a list of more than 20 people that combines the great and the mystical.James Leuba's "The psychology of religious mysticism" noted that "among the dread diseases that afflict humanity there is only one that interests us quite particularly; that disease is epilepsy."