I am very grateful to Kluwer Academic Publishers for the opportunity to republish these articles about knowledge and language. The Introduction to the volume has been written by James Logue, and I need to pay a very sincerely intended tribute to the care and professionalism which he has devoted to every feature of its production. My thanks are also due to Matthew MeG rattan for his technical as­ sistance in scanning the articles onto disk and formatting them. 1. Jonathan Cohen vii Publisher's Note Thanks are due to the following publishers for permission to reproduce the articles in this volume. On the project of a universal character. Oxford University Press. Paper 1 On a concept of a degree of grammaticalness. Logique et Analyse. Paper 2 Paper 3 The semantics of metaphor. Cambridge University Press. Paper 4 Can the logic of indirect discourse be formalised? The Association for Symbolic Logic. Paper 5 Some remarks on Grice's views about the logical particles of natural language. Kluwer Academic Publishers. Paper 6 Can the conversationalist hypothesis be defended? Kluwer Academic Publishers. Paper 7 How is conceptual innovation possible? Kluwer Academic Publishers. Should natural language definitions be insulated from, or interactive Paper 8 with, one another in sentence composition? Kluwer Academic Publish­ ers. Paper 9 A problem about truth-functional semantics. Basil Blackwell Publisher Ltd. Paper 10 The individuation of proper names. Oxford University Press. Paper 11 Some comments on third world epistemology. Oxford University Press. Paper 12 Guessing. The Aristotelian Society.