vez.com - The 18 Main Branches of Knowledge

Psychology  (Mind and reason for behaviour)
Business and Technology  (applied sciences to industry)
Neurology  (nerves)
Philosophy  (principles & concepts of knowledge)
Political Science  (government)
Literature  (writings)
Linguistics  (language)
Physiology  (life's processes)
Sociology  (society)
Anthropology  (humans)
Medicine  (treatments)
Pathology  (origin, nature of disease)
Zoology  (animals)
Biology  (life)
Chemistry  (atoms and molecules)
Geology  (earth)
Physics  (matter)
Astronomy  (universe)