Logic 441 Logic, Symbolic and mathematical 131 Philosophy 86 Reasoning 86 Language and languages 38 Knowledge, Theory of 34 PHILOSOPHY 34 Probabilities 31 Modality (Logic) 30 Methodology 29 Thought and thinking 28 History 27 Science 26 Semantics (Philosophy) 23 Reason 19 Fallacies (Logic) 15 Induction (Logic) 15 Logic, Medieval 14 Inference 13 Metaphysics 13 Paradox 13 Practical reason 12 Truth 12 General 11 Ontology 11 Proposition (Logic) 11 Critical thinking 10 Mathematics 10 Rhetoric 10 Evidence 9