Across
- 3. Air travel system
- 7. Being and Time
- 8. Divide in Europe
- 15. Superman theorist
- 17. Categorical imperative
- 20. Movement system
- 21. Stoic emperor
- 22. Calculus co-inventor
- 24. Space object orbiting
- 25. Political tension era
Down
- 1. Cold War competition
- 2. Leviathan author
- 4. Secret spying
- 5. Calculus co-inventor
- 6. Stoic philosopher
- 9. General will
- 10. Finding direction
- 11. Social contract
- 12. Cogito ergo sum
- 13. Spy operative
- 14. Old navigation tool
- 16. Candide author
- 18. Triangle man
- 19. Dialectic
- 23. Ethics author