As we study medieval philosophy, we realize that many of the questions that were made by the great philosophers of that time, are still present in modern philosophy as they continue being relevant for our understanding of the contemporary world. Therefore, in order to assist you in the task of investigating what lies underneath some of the most crucial current conflicts in our society, such as those that arise from religious intolerance, this book introduces you to some of the main medieval authors and helps you develop a more critical sense in regards of the aspects that support the principle of faith and the relationship between science and religion.