Your ignorance of all this became apparent to me when I found both of the two keys in my room.

One of them belongs to you, and I have brought it to give you.

Without it you might be broken in upon most unpleasantly by some unwelcome intruder.

But with the key in your possession, you can insert it in the lock whenever you wish to guard against any such intrusion." With that the speaker handed over the key, and then went on: "Now you will be able to visit me, just as I do you.

One thing more, however, is necessary.