1. Aristotle, De Anima, in Jonathan Barnes, ed., The Complete Works of Aristotle, vol. 1, trans J. A. Smith (New Jersey: Princeton University Press, 1984).
2. Ashmole, Elias, Prolegomena to Arthur Dee, Fasciculus Chemicus or Chymical Collections (London, 1650).
3. Augustine, The Confessions, trans. Henry Chadwick (Oxford: Oxford University Press, 1991).
4. Bacon, Francis, The Instauratio Magna Part II: Novum Organum and Associated Texts, eds. Graham Rees and Maria Wakely, Vol. 11 of The Oxford Francis Bacon (Oxford: Oxford University Press, 2004).
5. Ball, Philip, Curiosity: How Science Became Interested in Everything (Chicago: University of Chicago Press, 2012).