This volume consists of the first of the John Dewey Lectures delivered under the auspices of Columbia University's Philosophy Department as well as other essays by the author. Intended to clarify the meaning of the philosophical doctrines propounded by Professor Quine in 'Word and Objects', the essays included herein both support and expand those doctrines.

SummaryScientists regard their inductive hypotheses as confirmed when consistence exists between two or more results obtained by differing methods. Three hierarchical levels of confirmation are applied. Certainty is obtained by the deductive element of the third level. The question of uniformity o i nature is less decisive than the question whether or not the complexity of the processes observed or the limited scope of our senses and instruments permits to see through the causal connections involved.

This article describes a practical example of the predicate grue, examining the economic relationship between the percentage rate of unemployment and the percentage change of money wage rates known as the simple Phillips curve which exhibited regular behaviour before 1969 and erratic behaviour thereafter. It is proposed that such practical examples of grue from the real world be redescribed as regulatic. i.e. regular before time t and erratic thereafter. In the instance of a scientific model or theory being falsified it (...) is proposed to describe the predicate as tralse, i.e true before time t and false thereafter. The example to be discussed is a stronger example since entities in the real world started to behave in an extremely unpredictable fashion. (shrink)

v. 1. Autobiography and literary essays.--v. 2-3. Principles of political economy.--v. 4-5. Essays on economics and society, 1824-1879.--v. 6. Essays on England, Ireland, and the Empire.--v. 7-8. A system of logic; ratiocinative and inductive.--v. 9. An examination of Sir William Hamilton's philosophy.--v. 10. Essays on ethics, religion and society.--v. 11. Essays on philosophy and the classics.--v. 12-13. The earlier letters, 1812-1848.--v. 14-17. The later letters, 1849-1873.--v. 18-19. Essays on politics and society.--v. 20. Essays on French history and historians.--v. 21. Essays (...) on equality, law, and education.--v. 22-25. Newspaper writings.--v. 26-27. Journals and debating speeches.--v. 28-29. Public and parliamentary speeches.--v. 30. Writings on India.--v. 31. Miscellaneous writings.--v. 32. Additional letters of John Stuart Mill.--v. 33. Indexes to the collected works of John Stuart Mill. (shrink)