For the record then the citation: What we can't say we can't say, and we can't whistle it either. --- is dated 1929 and comes from Ramsey's "General propositions and causality", repr. posthumously in 1931 in "The foundations of mathematics" From wiki: "In 1929 Ramsey and Wittgenstein regularly discussed issues ... The contributions of Ramsey to these conversations were acknowledged by Wittgenstein in [his] later work. [Ramsey's] philosophical works included General propositions and causality (1929). Wittgenstein mentions him in the introduction to his Philosophical Investigations as an influence. Suffering from chronic liver problems, Ramsey developed jaundice after an abdominal operation and died on 19 January 1930 at Guy's Hospital in London." Cheers, Speranza ------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html