It has been suggested that he may have used bibliomancy (randomly selecting a book of history and taking his cue from whatever page it happened to fall open at)

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/ sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practised magic to support them."

Because he would have been seen as a witch/sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practiced magic to support them."

Because he would have been seen as a witch/sorcerer and executed. if you read the wiki on him, it states: "Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practiced magic to support them."

Because he would have been seen as a witch/sorcerer and executed. if you read the wiki on him, it states: Some accounts of Nostradamus's life state that he was afraid of being persecuted for heresy by the Inquisition, but neither prophecy nor astrology fell in this bracket, and he would have been in danger only if he had practiced magic to support them.