Final answer:
The key theme of the excerpt "The Cobbler's Son" is Imagination can take you very far. The protagonist longs to sail away with the ships and seek fortune in foreign lands. The passages highlight the power of imagination and the desire for exploration.
Step-by-step explanation:
The key theme of the excerpt "The Cobbler's Son" is Imagination can take you very far. The passage describes the protagonist's longing to sail away with the ships, seek fortune in foreign lands, and dream of unexplored territories. This reflects the power of imagination to transport oneself beyond the boundaries of their current life.
The first quotation "I used to go down and watch the sailors unloading the ships upon the river-wall." clarifies this theme by showing the protagonist's fascination with the sailors and their journeys. The second quotation "I longed to go with them out into the world to seek my fortune in foreign lands—Africa, India, China and Peru!" further emphasizes the protagonist's desire to explore new places.