ABSTRACT
Locke's sarcasm-laden point is that all the ideas that people are familiar with are ones which, from the Cartesian point of view, have a 'tangue of the Cask', an off flavour from their obvious origin in the earthly vessel of the pure immaterial spirits. Dualism faces similar conceptual problems, people cannot use the conceptual problems with materialism to argue that dualism must be true. Locke suggests a general ground for asserting the probability of dualism: His demonstration that God is immaterial, via consideration of 'the supposition of a system of matter thinking', will serve as a proof that it is 'in the highest degree probable, that the thinking substance in immaterial'. Locke defends, in sense, the possibility of thinking matter, that is, the possibility that what thinks within each of human beings is a material substance. He seems often to be operating in a dualist framework.
