1. Aristotle. (1934). Physics. In Loeb classical library (Philip Wicksteed & Francis Cornford, Trans.). Cambridge, MA: Harvard University Press.
2. Benjamin, Walter. (1968). The work of art in the age of mechanical reproduction. In Illuminations (pp. 217–251). New York, NY: Schocken Books.
3. Brentano, Franz. (1995 [1874]). Psychology from an empirical standpoint (Linda L. McAlister, Ed.). London, UK: Routledge.
4. Descartes, René. (1986 [1977] [1641]). Meditations on first philosophy (John Cottingham, Trans.). Cambridge, UK: Cambridge University Press.
5. Galilei, Galileo. (1957). Discoveries and opinions of Galileo (Stillman Drake, Trans.). London, UK: Anchor Books.