"'Think of all the great songs and epics you have known and the men who wrote them. And think how few of them, how very few, were ever worthy of what they sang or said. Far away upon the terraces of Antiquity, the voice of our father Ovid cries aloud for all the poets, his children: Video meliora proboque; deteriora sequor—"The better things I see and I approve them; but it is the baser that I follow". The sin I would not, that I do—and through the ages there have been prophets prophesying and poets testifying to eternal truths; but hardly ever a man behind them; hardly ever a strong, sane, balanced, complete man to follow them. The poets sit in the throne of Dante; whatsoever they command you to do, that do; but do not after their works. For they say and do not.'"

     The poet in G. K. Chesterton's The surprise (1932; first pub. 1952), act 2, scene 3; The collected works of G. K. Chesterton 11, Plays and Chesterton on Shaw, compiled and introduced by Denis J. Conlon (San Francisco:  Ignatius Press, 1989), 330.  I am told that this is p. 52 in the original of 1952.  I have not yet read the whole play.