Thoreau writes in his journal:
The true art is not merely a sublime consolation and holiday labor which the gods have given to sickly mortals, to be wrought at in parlors, and not in stithies amid soot and smoke, but such a masterpiece as you may imagine a dweller on the table-lands of Central Asia might produce, with threescore and ten years for canvas, and the faculties of a man for tools,—a human life, where in you might hope to discover more than the freshness of Guido’s Aurora, or the mild light of Titian’s landscapes; not a bald imitation or rival of Nature, but the restored original of which she is the reflection. For such a work as this, whole galleries of Greece and Italy are a mere mixing of colors and preparatory quarrying of marble.
Not how is the idea expressed in stone or on canvas, is the question, but how far it has obtained form and expression in the life of the artist.
