1. Stephen Spender, ‘I think continually’, in Poems (London, 1933), p. 45.
2. R.H. Popkin, ‘The Third Force in 17th Century Philosophy: Scepticism, Science and Biblical Prophecy’, Nouvelles de la République des Lettres, 1983,I.59f.
3. C.S. Lewis, Christian Reflections (Glasgow, 1981), p. 203.
4. M. Midgeley, Wisdom, Information, and Wonder: What is knowledge for? (London, 1989), p. 103.
5. R.H. Popkin, ‘Berkeley and Pyrrhonism’, reprinted in M. Burnyeat ed., The Skeptical Tradition (London, 1983), p. 394 n. 21 (my emphasis).