David Daiches, 'Gerard Manley Hopkins and the Modern Poets', New Literary Values, 1936

It was, then, his impatience with the poetic medium as generally accepted in the nineteenth century that brought Hopkins into immediate contact with the modern poets. The practice in which such impatience resulted was rationalised in his theory of 'Sprung Rhythm,' a theory highly important in its liberating effect on English metre since 1918.. ..