Final answer:
The section 'The Fire Sermon' in T.S. Eliot's 'The Waste Land' depicts the moral and spiritual decay of post-WWI society through various cultural references and imagery.
Step-by-step explanation:
In The Waste Land, the section "The Fire Sermon" establishes a powerful vision of the moral and spiritual decay of the post-World War I society. This section of T.S. Eliot's poem employs a range of cultural and literary references to depict a world devoid of spiritual value, characterized by sexual frustration and a sense of desolation. The imagery is drawn from various sources including the Buddha's Fire Sermon and the legend of the Fisher King to convey the barrenness of the modern world and serves as a criticism of contemporary society's spiritual emptiness.