David Jones (artist-poet) he invented later in life, which he termed "painted inscriptions", and these exert a continuing influence on calligraphers. Although he had been trying to write about his wartime experiences since 1928, it was not until 1937 that Jones published his first literary treatment of the conflict. "In Parenthesis", which was published by Faber and Faber with an introduction (in 1961) by T. S. Eliot, is a mixture of verse and prose-lines but the rich language establishes it as poetry, which is how Jones himself considered it. Jones's literary debut won praise from critics and from fellow-poets such as Eliot and
T. S. Eliot in the English language while others thought it was esoteric and wilfully difficult. Edmund Wilson, being one of the critics who praised Eliot, called him "one of our only authentic poets". Wilson also pointed out some of Eliot's weaknesses as a poet. In regard to "The Waste Land", Wilson admits its flaws ("its lack of structural unity"), but concluded, "I doubt whether there is a single other poem of equal length by a contemporary American which displays so high and so varied a mastery of English verse." Charles Powell was negative in his criticism of Eliot, calling his poems incomprehensible.