In Montaigne’s work, there are many different themes and ideas being describe and explained. One of the important themes that were discuss in his work is fear, which played a big part in animal life, especially human. Fear itself is a negative feeling that we human have, and also a key to many other negative actions, having great impact on our decisions. Which is also link to one of the other important explanation on idea of Montaigne’s, and one of them will be the ability of human imagination. With fear, we will have great number of imaginations. Which will be led to different physical illness and other mental disease. In Montaigne’s work, he also explains that there are people struggle through fear in their entire life, and make irrational decisions because of it.