Abstract
A slightly expanded version of the De Carle Lectures delivered in 1964. The general program of this essay is to defend the autonomy of certain aspects of first person intentional discourse on the ground that they have a normative element and are thus irreplaceable by scientific explanations of human conduct and mental processes, whatever course these explanations may take. The first chapter distinguishes two kinds of possibility, one of which is human capability or power conceptually connected to the notion of wanting or willing. The second chapter discusses the concept of desire. The third chapter distinguishes two kinds of knowledge, knowledge of the natural order justified by observation and inductive reasoning, and knowledge of my future actions whose source is intention or decision. This essay is clearer and more concise than the author's Thought and Action.—R. S.