Step 1: Understanding the Concept:
This question refers to the central idea of the poem 'The Empty Heart' by Periasamy Thooran, which is a powerful commentary on human greed.
Step 2: Detailed Explanation:
The poem tells the story of a man who is granted a magic pitcher that gives him whatever he wants. However, his greed is endless, and he is never satisfied. This constant, unfulfilled desire becomes a source of immense suffering.
The poem concludes by stating that physical ailments ('disease') can be cured, but the emotional or psychological pain caused by greed and the feeling of being emotionally hurt by one's own insatiable desires is a wound that never heals. It is a pain that "comes back again and again." The feeling of hurt is what lingers.
Step 3: Final Answer:
Only the pain caused by hurt comes back again and again.