s. One opposing view which was held by Hume is that no investigation could reveal an immaterial, indivisible, imperishable soul-substance. He writes, "When I enter intimately upon what I call myself, I always stumble on some particular perception of pain or pleasure. I never catch myself, at any time, without a perception, and never can observe anything but the perception." The rationalists seemed to have no problem with an illogical leap of faith. It was needed to continue the journey. Since the philosophies of Descartes and Leibniz were built around this idea of an immaterial, indivisible God, the philosophy that followed seemed to many to be shaky and speculative by their own definition. But considering the time period and the pressure involved in philosophizing at all, we must admire and respect the great advancement in thinking that was prompted by these great men. Bibliography Bibliography Mates, B. The Philosophy of Leibniz. New York and Oxford: Oxford University Press, 1986. Descartes, Rene. The Philosophical Writings, tr. John Cottingham and Dugald Murdoch. Cambridge: Cambridge University Press, 1985. Bricke, John. Humes Philosophy of Mind. Princeton: Princeton University Press, 1980. Matson, Wallace. A New History of Philosophy. Harcourt Brace Jovanovich, Inc., 1987. ...