Test Your Knowledge (difficult-level)

1234567891011121314
Across
  1. 3. Art of persuasive speaking
  2. 5. Self-evident truth
  3. 7. Study of being
  4. 9. Reads same both ways
  5. 10. Mysterious puzzle
  6. 12. Proposition proved by logic
  7. 13. Deep scholarly knowledge
  8. 14. Vocabulary of a language
Down
  1. 1. Established belief
  2. 2. Origin of an artifact
  3. 4. Logical argument method
  4. 6. Deductive reasoning form
  5. 8. Witty concise saying
  6. 11. Assumption for reasoning
  7. 12. Obvious truth