¹. See especially G. Vlastos, ‘The Paradox of Socrates’, in G. Vlastos (ed.), op. cit. (p. 9, n. 1), pp. 1–21. For a recent attempt to reinstate Xenophon, see D. Morrison, ‘On Professor Vlastos’ Xenophon’, Ancient Philosophy, 7 (1987), pp. 9–22.