Breaking new ground in the debate about the relation of mind and body, David Armstrong's classic text - first published in 1968 - remains the most compelling and comprehensive statement of the view that the mind is material or physical. In the preface to this new edition, the author reflects on the book's impact and considers it in the light of subsequent developments. He also provides a bibliography of all the key writings to have appeared in the materialist debate.

"the incorrigibility thesis", The thesis that it is logically impossible to be mistaken about such things as whether I am now in pain or am seeing or seeming to see something red, Is very widely supposed to be false. I consider the arguments designed to show this, And argue that they all fail.