sealed book

How to use sealed book in a sentence

• Old and new measurements, tonnage, time allowances and movable ballast, are all a sealed book to me.

  The Pit Town Coronet, Volume II (of 3) | Charles James Wills

• But, if you come to look at the matter closely, you will see that the time present is also in some sense a sealed book to us.

  Friends in Council | Arthur Helps

• And yet, in spite of it all, Judeo-German has remained practically a sealed book to the world.

  The History of Yiddish Literature in the Nineteenth Century | Leo Wiener

• Monsieur Calonne had read my inmost heart, whilst I foolishly imagined it was a sealed book!

  Bentley's Miscellany, Volume II | Various

• From this cause the characters of those nearest and dearest to him remained to his life's end a sealed book.

  The Book-Hunter | John Hill Burton