1. J.S. Bell, Speakable and Unspeakable in Quantum Mechanics, 2nd edn. (Cambridge University Press, 2004)
2. J. Burnet, Early Greek Philosophy, 3rd edn. (Adam & Charles Black, London, 1920)
3. R. Dedekind, Stetigkeit und irrationale Zahlen (Vieweg, 1872)
4. R. Descartes, La Géométrie. In Discours de la méthode (Jan Maire, Leyden, 1637)
5. S. Drake (ed.), Discoveries and Opinions of Galileo (Knopf Doubleday, New York, 1957)