Ten Years Later: The Man in The Iron Mask by Alexandre Dumas Chapter 1 Page 21

“Then do not be astonished that I am mistrustful, since you suspect me of knowing what I do not know.”

Aramis was struck with admiration at this energetic resistance. “Oh, monseigneur! you drive me to despair,” said he, striking the armchair with his fist.

“And, on my part, I do not comprehend you, monsieur.”

“Well, then, try to understand me.” The prisoner looked fixedly at Aramis.

“Sometimes it seems to me,” said the latter, “that I have before me the man whom I seek, and then — ”

“And then your man disappears, — is it not so?” said the prisoner, smiling.