T. S. Eliot's poem The Hollow Men is said to have provided Graham Greene with many of the ingredients for The Power and The Glory. You might like to have a look at it as you read our November selection.
The Hollow Men is easily available on the web, but here is a link to a version you might enjoy perusing as a ready way to widen your appreciation of the poem. It's an interactive version, with the poem and annotations appearing side by side. You can click on any of the underlined words and phrases to read a brief discussion of them. The site was created by a student at Oberlin and submitted in lieu of a paper.
Interestingly, The Hollow Men contains allusions to, among other works, Conrad's Heart of Darkness, which, conveniently, we have already read.
And for those who like to be read to, another version for you!