Now among other things of this kind which he discover'd, it appear'd to him that the Animal Spirit, which is Seal'd in the Heart (as we have mention'd before) must necessarily have some Quality superadded to its Corporeity, which rendred it capable of those wonderful Actions, different Sensations and Ways of apprehending Things, and various sorts of Motions; and that this Quality must be its Form, by which it is distinguish'd from other Bodies (which is the same that the Philosophers call the Sensitive Soul) and so in Plants, that which was in them the same that radical Moisture was in Beasts, was something proper to them, which, was their Form, which the Philosophers call the Vegetative Soul."
— 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.