Graham Greene is a lucky writer, not only widely admired in his work but also popular in his work. The concept of good and evil, and their interaction in the story is at the center of what he believes is the concept of religion. But his reflections on morality and charity that humans can make in life is not a direct repeat of these themes by Catholics.
Literary analysis helps to understand the power of literary works. It gives you the insight into the next novel you read (or poetry and history). At a practical level, literary analysis is usually what a classroom teacher wants a student to do to understand a book. Therefore, literary analysis is good, as long as it is a means to achieve a good target and achieve a meaningful goal. But it is no longer a good goal if you know the literary analysis itself, the literature is well understood, or you know or believe in such a way as to hinder the appreciation of literary works. In other words, literary analysis has its own place, but this is not the purpose of literature.
Literary criticism is an analysis of literature. Focus can be as varied as Homer or Freud's analysis. Not all methods of literary criticism are inherently analytical, but since the middle of the 20th century the main methods of Western literature education, ie literary morphological analysis or careful reading are the same. This approach is based on academic movement labeled "close to new text" close to text. It is a short poem mainly like Sonnet, which is great for this kind of analysis because of its small size and complexity. - There is no reference biography or historical framework as an understandable discourse unit