Any long work in which poetry is persistent, be it epic or drama or narrative, is really a succession of separate poetic experiences governed into a related whole by an energy distinct from that which evoked them.

But in the finished art of the song the use of words has no connection with the use of words in poetry.

For while the subjects of poetry are few and recurrent, the moods of man are infinitely various and unstable. It is the same in all arts.

If it is an imperfect word, no external circumstance can heighten its value as poetry.

It should here be added that poetry habitually takes the form of verse.