Logic Philosophy 61 History 10 Reasoning 8 Language and languages 7 Nyaya 6 Science 6 Mathematics 5 Critical thinking 4 Language and logic 4 Methodology 4 Semantics (Philosophy) 4 Buddhist logic 3 Hindu logic 3 Knowledge Theory 3 Knowledge, Theory of 3 Ontology 3 Philosophy and science 3 Semantics 3 Aesthetics 2 Bibliography 2 Biography 2 Fuzzy Logic 2 Fuzzy systems 2 Geometry 2 Grammar 2 Indian philosophy 2 Linear Programming 2 Logicians 2 Metaphysics 2