How does knowledge open doors?

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Across
  1. 2. Send out.
  2. 6. Selling places.
  3. 10. Transfers files to a computer.
  4. 11. The best well-known university in the world.
  5. 12. WWII era German Industrialist with a list.
  6. 17. Winter neckwear.
  7. 18. Innovation.
  8. 19. Strange and scary.
  9. 21. Concept to self.
  10. 24. Wooden duck, say.
  11. 27. Van Gogh's brother.
  12. 28. Supersmart group.
  13. 30. Alphabet.
  14. 31. Top score?
  15. 32. Sony laptop brand.
Down
  1. 1. Old Japanese assassin.
  2. 3. Sleeping beauty syndrome.
  3. 4. Money in Mexico.
  4. 5. Pie à la mode.
  5. 7. Dry up as in liquid.
  6. 8. Book maker and marketeer.
  7. 9. Richest city in the world.
  8. 13. Literary piece.
  9. 14. Harvard rival.
  10. 15. Vista.
  11. 16. ___diem.
  12. 18. Book's backbone.
  13. 20. Studies.
  14. 22. Knowledge.
  15. 23. Prince of Bismarck.
  16. 25. Family.
  17. 26. Lost at ___.
  18. 29. Atmosphere.
  19. 31. British political party.