Whatever one wishes to say, there is one noun only by which...

Whatever one wishes to say, there is one noun only by which to express it, one verb only to give it life, one adjective only which will describe it. One must search until one has discovered them, this noun, this verb, this adjective, and never rest content with approximations, never resort to trickery, however happy, or to vulgarism, in order to dodge the difficulty.