Philosophy

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Across
  1. 4. a leading figure in natural philosophy
  2. 5. first moral philosopher of Western ethical tradition of thought
  3. 7. theory of knowledge, especially with regard to its methods, validity, and scope
  4. 8. branch of philosophy that deals with the first principles of things
  5. 10. the belief that life is meaningless
  6. 13. German philosopher who contemplated the meaning of values and their significance to human existence
  7. 15. Athenian philosopher during the Classical period in Ancient Greece
  8. 16. an acceptance that a statement is true or that something exists
  9. 17. a thought or concept
  10. 18. having, done for or marked by a legitimate reason
Down
  1. 1. info acquired through experience or education
  2. 2. French mathematician and scientist and first modern philosopher
  3. 3. system of rules
  4. 6. Greek philosopher and polymath in Ancient Greece taught by Plato
  5. 9. the study of fundamental nature of knowledge, reality and existence
  6. 11. German philosopher and central figure in modern philosophy
  7. 12. branch of philosophy about principles of beauty
  8. 14. knowledge from sensory experience