Nostradamus was a 16th century French SEER and PROPHET who is best known for his book of prophecies, Les Propheties. He is often referred to as a SEER due to his ability to predict future events. He is also known as a PROPHET because he was able to interpret the signs of the times and provide guidance to those who sought it. His predictions have been studied and discussed for centuries, and many believe that some of his predictions have come true.