John Deely, professor of philosophy at Loras College, is the author of Tractatus de Signis: The Semiotic of John Poinsot (1985), Introducing Semiotics (1982) and Basics of Semiotics (1990).

In the span of a decade, Professor Deely has produced three major works which have singly and together systematically amplified and deepened our knowledge of the intriguing world of signs, particularly in humanity's service. In this third, summative book of the trio-so lucidly argued as to insure accessibility for one and all-he once again puts his immense erudition to excellent practical use.