Ten Years Later: The Man in The Iron Mask by Alexandre Dumas Chapter 21 Page 22

that M. Fouquet should in his turn have a devoted friend who knew this state secret, and felt that he possessed strength and courage enough to divulge this secret, after having had the strength to carry it locked up in his own heart for twenty years.

“Go no farther,” said Fouquet, full of generous feelings. “I understand you, and can guess everything now. You went to see the king when the intelligence of my arrest reached you; you implored him, he refused to listen to you; then you threatened him with that secret, threatened to reveal it, and Louis XIV., alarmed at the risk of its betrayal, granted to the terror of your indiscretion what he refused to your generous intercession.

I understand, I understand; you have the king in your power; I understand.”