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