Final answer:
The character's internal struggle with the recognition of his theft and questioning of his actions exemplifies the theme that dishonesty can result in a guilty conscience.
Step-by-step explanation:
The detail from the text that helps develop the theme that being dishonest can lead to a guilty conscience is illustrated through the character's internal struggle after committing theft. The character grapples with the term 'Theft' and acknowledges the gravity of his actions by facing the question of what it means to be a thief. This internal conflict and moral dilemma highlight the theme of how dishonest actions can burden an individual with guilt. The character's contemplation over the stolen money, his reflections on social inequalities, and his projection of his feelings onto his surroundings, all contribute to the development of this theme.