If you don't want to know the circumstances surrounding Friday's entry in this slideshow, then don't read any further...
[spoiler]Friday's quote:
Ep #475 (1968) - Dr. Lang - 'No! No! No one else MUST know!'
From "#0475/0476: Robservations 05/09/02: Give Me Jeff Clark's Face!"
Barn asks about this permanent cure. Do it now, tonight, begs Barnabas, but Eric says the experiment isn't ready. Stop tormenting me and at least tell me about it, pleads Barn--don't give me hope then take it away--I'm afraid, she'll do anything. Eric swears he'll do anything to save him, but he can't yet. He can't risk failure. What about money, help? asks Barnabas eagerly. No, no one else must know, insists Eric, but agrees he must tell Barnabas of the risks and decisions involved in this plan. Barnabas fears Angelique turning him back into a vampire.Eric says he's going to do something no one else has ever done before, an effort at which all other doctors have failed--if I do fail, warns Lang, you will be a hollow shell, unable to rise or walk. But if you succeed? asks Barnabas. You will still leave your body, explains Lang, but will live--the witch will think you've escaped your body by death, when in reality you will have escaped by living.
[/spoiler]
The Roberservations gets the quote pretty much word for word, only dropping an initial "No!" Though it does leave out details when it comes to other parts of the scene...