The Rescue by Joseph Conrad

His tale was as startling as the discovery of a new world. She was being taken along the boundary of an exciting existence, and she looked into it through the guileless enthusiasm of the narrator. The heroic quality of the feelings concealed what was disproportionate and absurd in that gratitude, in that friendship, in that inexplicable devotion. The headlong fierceness of purpose invested his obscure design of conquest with the proportions of a great enterprise. It was clear that no vision of a subjugated world could have been more inspiring to the most famous adventurer of history.

From time to time he interrupted himself to ask, confidently, as if he had been speaking to an old friend, "What would you have done? " and hurried on without pausing for approval.