T. S. Eliot,
Ezra Pound: His Metric and Poetry
“ Ezra Pound has been fathered with vers libre in English, with all its vices and virtues. The term is a loose one—any verse is called "free" by people whose ears are not accustomed to it—in the second place, Pound's use of this medium has shown the temperance of the artist, and his belief in it as a vehicle is not that of the fanatic. He has said himself that when one has the proper material for a sonnet, one should use the sonnet form; but that it happens very rarely to any poet to find himself in possession of just the block of stuff which can perfectly be modelled into the sonnet. ”
