Cayce was an intuitive psychic diognostic who had the ability to self induce a trance like state where he could access the Akashic Records... pretty much that means he was omniscient in an unconscious state. He believed that any individual could do what he did if he were able to pay the price of "self" detachment but he never really could help motivate a person in attaining how to do this.

Right now, Cayce predictions amount to over 14, 300 and reside in the A.R.E. or the Association of Research and Enlightenment in Virginia. 65% of Cayces holistic volumes regard health. The others inform us of our past, present and future among many beliefs such as: Reincarnation, Astrology, and Atlantean Civilization. We know Cayce gave readings to President Hoover, Nicolas Tesla, Thomas Edison, Founders of IBM radio and many more important people of the era.
Although Cayces fame is not widely known... yet, it is because the information he gave could never be proven at his time. Now however, his fame is growing because they are being proven right in areas of medicine, health, and even history.

Others prophets you might want to look into are Mother Shipton (one of my favorites), Nostradomus, Gigory Rasputin, Buddha, Ghandi, Jesus and Elisabeth Haich... be careful of the information you attain regarding Jesus though.