From the NYT article Masters of the Form

“Criticism demands of the critic a terrible nakedness: a real critic has no one but himself to depend on. He can never forget that all he has to go by, finally, is his own response, the self that makes and is made up of such responses — and yet he must regard that self as no more than the instrument through which the art is seen, so that the work of art will seem everything to him and his own self nothing.” — RANDALL JARRELL 1952