1. Herodotus, III, 38.1 refer to this passage in n. 3 to Chap. 5 of my Open Society and Its Enemies. London: George Routledge & Sons, 1945; Princeton: Princeton University Press, 5th rev. ed., 1966. Vol. I.
2. See Alfred Tarski, Logic, Semantics, Metamathematics, trans, by J. H. Woodger. New York: Oxford University Press, 1956.1 have expounded it in various places; see, for example, my Conjectures and Refutations, pp. 223–25.
3. See Benjamin Lee Whorf, Language, Thought, and Reality, ed. by John B. Carroll. Cambridge, Mass.: MIT Press, 1956.
4. See W. V. Quine. Word and Object. Cambridge, Mass.: MIT Press, 1960; and Ontological Relativity and Other Essays. New York: Columbia University Press. 1969.
5. Cp. p. 232 of T. S. Kuhn, “Reflections on my Critics”, in Criticism and the Growth of Knowledge, ed. by Imre Lakatos and Alan Musgrave. London: Cambridge University Press, 1970, pp. 231–78.