Knowledge is power. Empower yourself with knowledge. Create power within. Per Dewey Decimal System, the Total Knowledge System is categorized into 10 major sections :
Total Knowledge System - broad classification:
000 Generalities
100 Phylosophy and Psychology
200 Religion
300 Social Science
400 Language
500 Natural Science and Mathematics
600 Technology - Applied Science
700 The Arts - Fine Arts
800 Literature and Rhetorics
900 Geography and History