Imagism was not Symbolism, but it proceeds from it
Three Imagist Poets, The Little Review, 1916
I should strive (on reading a book of poetry) to evoke the a soul out of this piece of inanimate matter,a something characteristic and structural inherent in this organic form which is friendly to me and responds to my mood.
Preface to Goblins and Pagodas, 1916
Poetry merely descriptive of nature, however vivid, no longer seems enough for me, there has to be added to it, the human judgement, the human evaluation.
Life is My Song, John Gould Fletcher, Autobiography, 1937
Preface to Irradiations; Sand and Spray, 1915
To begin with, the basis of English poetry is rhythm, or, as some would prefer to call it, cadence. This rhythm is obtained by mingling stressed and unstressed syllables.
It is time to create something new. It is time to strip poetry of meaningless tatters of form, and to clothe her in new, suitable garments.
It is America's opportunity to lay the foundations for a new flowering of English verse, and to lay them as broad as they are strong.