"Good!" he exclaimed.

He took a pen, signed, threw sand over my writing and over his; then, giving me back the epistle, which was for a simple inspector,—as, at first, they did not risk confiding more than that to my inexperienced hand,—he said—

"Do you know how to fold a letter?"

I looked at him with astonishment.

"I ask you if you know how to fold a letter. Answer me!"

"Yes, yes ... at least, I believe so," I replied, astonished at the fixed stare his little grey eyes had assumed.

"You believe? Is that all? You are not sure?"

"Monsieur, I am not yet sure about anything, as you see, not even about the folding of a letter."

"And there you are right, for there are ten ways of folding a letter, according to the rank of the person to whom it is addressed. Fold this one."

I began to fold the letter in four.