„Let me add,” he went on, “that since I handle secret and most-secret despatches, I know things that I don’t know, if I make my meaning clear.“

— Robert A. Heinlein

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„I want to be with those who know secret things or else alone.“
— Rainer Maria Rilke
„The secret is not to dream," she whispered. "The secret is to wake up. Waking up is harder. I have woken up and I am real. I know where I come from and I know where I'm going. You cannot fool me any more. Or touch me. Or anything that is mine.“
— Terry Pratchett
„Actually that’s my secret — I can’t even talk about you to anybody because I don’t want any more people to know how wonderful you are.“
— F. Scott Fitzgerald