It's taken me until now to complete this brilliant puzzle. But although I have a full grid, the quotation, the speaker, the two paired items and their significance, and the deciphered two-word message, I can't see how complying with the last of these reveals anything.
Is there an outcome that constitutes a sentence? Does such a sequence of words immediately precede ('lead to') the quotation? Not in my copy of the work.
Also, I can't parse the longer word that is supposed to be clued by 26ac. This is a weakness in one sense, as it leaves me with a full solution but a missing bit of comprehension and appreciation.
But, my goodness, aren't those clues wonderful!