Knowledge, Theory of Philosophy 430 Science 192 History 190 Methodology 95 Metaphysics 86 Reason 75 more ... Philosophy of mind 65 Ethics 64 Truth 64 Teoria del conocimiento 59 Belief and doubt 55 Skepticism 54 Ontology 50 Logic 44 Research 44 Social aspects 42 Causation 40 Education 35 Knowledge, Sociology of 34 Language and languages 34 Intellect 33 Filosofia 32 Cognition 31 Perception 31 Phenomenology 31 Thought and thinking 31 Reasoning 30 Perception (Philosophy) 28 Philosophy, Modern 28 less ...