SW, These are excellent questions and my suspicion is that Wittgenstein, who spoke of "grave mistakes" in this work as you know, may not have had a clear answer to this question. However, I would suggest that this might be a start: distinction between the question of whether there is a logical distinction between different sentences and the question of whether we ought to respond to them in the same way. Perhaps we could say, consistent with the Tractatus, "nonsense is nonsense" but also that we can sometimes recognize - by certain words, by context, by the attitude and manner of the person uttering them - that some nonsense is not only serious but also that it responds to something deeper than mere confusion. The logical question of nonsense is then severed from the psychological question of motivation. And on that basis, we could approach the question of whether "nonsense!" is warranted as a rebuke or merely a report of the logical situation. JPDeMouy ========================================= Need Something? Check here: http://ludwig.squarespace.com/wittrslinks/