Published online by Cambridge University Press: 11 October 2019
1 Popkin's seminal History of Scepticism first appeared in 1960, bearing the subtitle From Erasmus to Descartes. The second, expanded edition of 1979 is subtitled From Erasmus to Spinoza, while the third and final edition, of 2003, extends From Savonarola to Bayle.
2 For Burnyeat's claims regarding what he calls ‘insulation by levels’, see his ‘The Sceptic in His Place and Time’, reprinted in vol. 1 of M. Burnyeat, Explorations in Ancient and Modern Philosophy (2012), pp. 316–45. Regarding this aspect of Burnyeat's article, I am in agreement with T. Brennan and C. Roberts, ‘Sextus Empiricus’, in D. Machuca and B. Reed (edd.), Skepticism: from Antiquity to the Present (2018), pp. 136–7.