Definition of Metaphor
Fruit—which often appears as a metaphor for the good things in life—becomes a recurring motif in Walden. It first appears in "Economy" as a metaphor for the finest, simplest, and least materialistic experiences in life:
Most men, even in this comparatively free country, through mere ignorance and mistake, are so occupied with the factitious cares and superfluously coarse labors of life that its finer fruits cannot be plucked by them. Their fingers, from excessive toil, are too clumsy and tremble too much for that.
In "Where I Lived, and What I Lived For," Thoreau likens self-creation to artwork via metaphor:
Unlock with LitCharts A+It is something to be able to paint a particular picture, or to carve a statue, and so to make a few objects beautiful; but it is far more glorious to carve and paint the very atmosphere and medium through which we look, which morally we can do. To affect the quality of the day, that is the highest of arts.