close the book on

verb2

1. •
   To stop worrying about or trying to do something about; to ignore.

   • Roth's continued productivity ensures that we can't yet close the book on his career. — 2011
2. •
   To finish; to bring to an end.

   • We do not presume that our reconstruction will close the book on the evolutionary origins of great ape cognition. — 2007