Nothing is as contagious as enthusiasm. It is the real allegory of the myth of Orpheus; it moves stones, and charms brutes. It is the genius of sincerity, and truth accomplishes no victories without it.
As it must not, so genius cannot be lawless; for it is even that constitutes its genius - the power of acting creatively under laws of its own origination.
The first class of readers may be compared to an hour-glass, their reading being as the sand; it runs in and runs out, and leaves not a vestige behind. A second class resembles a sponge, which imbibes everything, and returns it in nearly the same state, only a little dirtier. A third class is like a jelly-bag, which allows all that is pure to pass away, and retains only the refuse and dregs. The fourth class may be compared to the slave of Golconda, who, casting aside all that is worthless, preserves only the pure gems.
The poet, described in ideal perfection, brings the whole soul of man into activity, with the subordination of its faculties to each other according to their relative worth and dignity. He diffuses a tone and spirit of unity, that blends, and (as it were) fuses , each into each, by that synthetic and magical power, to which I would exclusively appropriate the name of Imagination.
During the act of knowledge itself, the objective and subjective are so instantly united, that we cannot determine to which of the two the priority belongs.
With no other privilege than that of sympathy and sincere good wishes, I would address an affectionate exhortation to the youthful literati, grounded on my own experience. It will be but short; for the beginning, middle, and end converge to one charge: NEVER PURSUE LITERATURE AS A TRADE.