"A fanatic is one who can't change his mind and won't change the subject"

This quote by Winston Churchill is a commentary on the risks of fanaticism. A fanatic is somebody who is so dedicated to a specific concept or belief that they are unable to think about any other perspective. They are so entrenched in their own beliefs that they are unwilling to even talk about any other point of view. Churchill is alerting against the dangers of this sort of single-mindedness, as it can cause an absence of understanding and compassion for others. He is suggesting that it is essential to be open up to various concepts and to be going to discuss them in order to acquire a better understanding of the world. By being open to various point of views, we can learn from each other and grow as individuals.