How does Thoreau defend his approach in the second paragraph of “Economy” in Walden ?

Thoreau explains that he will keep the first-person “I” because he is writing from his own experience and wants to speak candidly about what he knows. He says he is confined to this subject by the narrowness of his experience, supporting the choice that he uses “I” for sincerity and honesty. It is not simply a device to sound interesting or grab readers’ attention.

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