I always imagined Nostradamus saw visions of the future, however after reading John Hogue's book Nostradamus - A Life and Myth, I learned that he used many ancient and forbidden texts, conjuring tools, astrology and burned herbs in a meditative state to 'see into the future'. Nostradamus wrote his predictions in form of quatrains and printed an almanac for the year ahead that was widely read amongst the educated in France and across Europe.
This was a great read and I recommend it to anyone wanting to learn more about the life of Nostradamus. If you're hoping to read his all his quatrains though, you'll need to track down The Complete Prophecies by John Hogue, which I might just have to do.
My rating = ***