Nostromo has clearly resolved not to reveal the treasure's location. Note that he is now rejecting this option even though Charles Gould would approve of it (and hence would presumably see to Decoud's protection). Keeping the silver secret is now purely a personal matter; he is "a changed man" indeed.

The symbolic undercurrent continues, not only in relation to the treasure as inner worth, which Nostromo is more than ever resolved to defend against exploitation, but in the notion of moving the treasure "ashore." The silver on the Great Isabel stands for the dream-ideal of the fulfilled individual, while moving it to shore would imply restoring the huge crusading social dream-ideals of history. That is an impossibility beyond the reach of miracles precisely because of what Monygham has taught Nostromo in this scene: that the nature of mankind is subjective isolation. The People being now aware of that truth, they could never again place faith in the social dream-ideal.