This work challenges what Glbert Ryle calls philosophy's "official theory", the Cartesian "myth" of the separation of mind and matter.

This now-classic work challenges what Ryle calls philosophy's "official theory," the Cartesians "myth" of the separation of mind and matter. Ryle's linguistic analysis remaps the conceptual geography of mind, not so much solving traditional philosophical problems as dissolving them into the mere consequences of misguided language. His plain language and esstentially simple purpose place him in the traditioin of Locke, Berkeley, Mill, and Russell.