1.1. Imperatives and Commands. The aim of this book is to present the fundamentals of a logical theory of commands. In large measure it is devoted to a task preliminary to any adequate articulation of such a theory — the clarification of the basic constituent ideas required for a viable analysis of the complex concept of a command. Only when our feet have been set securely upon the firm ground of an appropriate conceptual clarification can a meaningful study of logical mechanisms get under way.