1. Cambridge University Library, Cambridge. Isaac Newton. Quaestiones quaedam philosophicae. MS Add. 3996. Transcribed by The Newton Project, Oxford. http://www.newtonproject.ox.ac.uk/view/texts/normalized/THEM00092. Accessed 6 December 2021.
2. Author’s personal copy. Henry More, n.d. A Letter from Henry More to a Gentleman. English translation of Epistola H. Mori ad V.C. by A. Rupert Hall.
3. Trinity College, Cambridge. Ca. 1661-5. Isaac Newton. Trinity College Notebook. Digital copy with notes by Niccolo Guicciardini.https://cudl.lib.cam.ac.uk/view/MS-ADD-03996/285. Accessed 6 December 2021.
4. University of Oxford. The Newton Project. directed by Rob Iliffe and Scott Mandelbrote. http://www.newtonproject.sussex.ac.uk. Accessed 6 December 2021.
5. Cudworth, Ralph. 1678. True Intellectual System of the Universe. London: Richard Royston.