At times it has been doubtful to me if Emerson really knows or feels what Poetry is at its highest, as in the Bible, for instance, or Homer or Shakspeare. I see he covertly or plainly likes best superb verbal polish, or something old or odd
I take as metaphysical poetry that in which what is ordinarily apprehensible only by thought is brought within the grasp of feeling, or that in which what is ordinarily only felt is transformed into thought without ceasing to be feeling.
The philosophic mind inclines always to an elaborate life--the life of Goethe or of Leonardo da Vinci; but the life of the poet isintense--the life of Blake or of Dante--taking into its centre the life that surrounds it and flinging it abroad again amid planetary music.
Poetry, even that of the loftiest, and seemingly, that of the wildest odes, [has] a logic of its own as severe as that of science; and more difficult, because more subtle, more complex, and dependent on more and more fugitive causes. In the truly great poets... there is a reason assignable, not only for every word, but for the position of every word.
The necessity of poetry has to be stated over and over, but only to those who have reason to fear its power, or those who still believe that language is 'only words' and that an old language is good enough for our descriptions of the world we are trying to transform.