The phenomenon of action in which the mind moves the body has puzzled philosophers over the centuries. In this new edition of a classic work of analytical philosophy, Brian O'Shaughnessy investigates bodily action and attempts to resolve some of the main problems. His expanded and updated discussion examines the scope of the will and the conditions in which it makes contact with the body, and investigates the epistemology of the body. He sheds light upon the strangely intimate relation of awareness in which we stand to our own bodies, doing so partly through appeal to the concept of the body-image. The result is a new and strengthened emphasis on the vitally important function of the bodily will as a transparently intelligible bridge between mind and body, and the proposal of a dual aspect theory of the will.