First published in 2000. Routledge is an imprint of Taylor & Francis, an informa company.

1. Concerning the Author 2. The Fixation of Belief 3. How to Make Our Ideas Clear 4. The Scientific Attitude and Fallibilism 5- Philosophy and the Sciences: A Classification 6. The Principles of Phenomenology 7-Logic as Semiotic: The Theory of Signs 8. The Criterion of Validity in Reasoning 9- What is a Leading Principle? 10. The Nature of Mathematics 11. Abduction and Induction 12. On the Doctrine of Chances, with Later Reflections 13- The Probability of Induction 14-The General Theory of Probable Inference 15- Uniformity 16. Some Consequences of F our Incapacities 17- The Essentials of Pragmatism 18. Pragmatism in Retrospect: A Last Formulation 19. Critical Common-sensism 20. Perceptual Judgements 21. Two Notes: on Motives, on Percepts 22. The Approach to Metaphysics 23. The Architecture of Theories 24. The Doctrine of Necessity Examined 25. The L aw of Mind 26. Synechism, Fallibilism, and Evolution 27. Evolutionary Love 28. The Concept of God