Philosophy Science History 15 Methodology 11 Congresses 5 Knowledge, Theory of 3 Logic, Symbolic and mathematical 3 Social aspects 3 Addresses, essays, lectures 2 Education 2 Experience 2 Physics 2 Research 2 Ajax (Greek mythology) in literature 1 Belief and doubt 1 Biology 1 Civilization 1 Discoveries in science 1 Environmental health 1 Epistemology 1 Geography 1 James I, 1603-1625 1 Life (Biology) 1 Literature and science 1 Logical positivism 1 Mathematical linguistics 1 Mathematics 1 Natural history 1 Precautionary principle 1 Probabilities 1