"Now since that Animal Spirit which is seated in the Heart is of a most exact Temperature, as being finer than Earth and Water, and grosser than Fire and Air, it has the Nature of a Mean between them all, and which has no manifest Opposition to any of the Elements, and by this means is fitted to become that Form which constitutes an Animal."
— Ockley, Simon (bap. 1679, d. 1720)
Ibn Tufail (Abu Bakr Muhammad Ibn Tufail al-Qasi), trans. Simon Ockley, The Improvement of Human Reason Exhibited in the Life of Hai Ebn Yokdhan: Written in Arabick above 500 Years ago, by Abu Jaafr Ebn Tophail. In which is demonstrated, By what Methods one may, by meer Light of Nature, attain the Knowledg of things Natural and Supernatural; more particularly the Knowledge of God and the Affairs of another Life. Illustrated with proper Figures. Newly Translated from the Original Arabick, A.M. Vicar of Swavesey in Cambridgeshire. With an Appendix, In which the Possibility of Man's attaining the True Knowledg of God, and Things necessary to Salvation, without Instruction, is briefly consider'd. (London: Printed and Sold by Edm. Powell and J. Morphew, 1708). <Link to Google Books><Link to ECCO>
Text from Project Gutenberg edition: http://www.gutenberg.org/files/16831/16831-h/20018-h.htm.