Immanuel Kant Crossword

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Across
  1. 3. Kant's work published in 1781
  2. 6. Kant's idea of this was that people could think freely for themselves
  3. 7. Kant's work published in 1797
  4. 8. an unconditional moral obligation which is always in place
  5. 9. "________ to know!"
Down
  1. 1. branch of philosophy that deals with abstract thoughts
  2. 2. Where Immanuel Kant was born
  3. 4. _________ the Great, King of Prussia in 1740
  4. 5. Theory of __________, has underlying factors in modern science