“People go away and they don't come back.”

Source: New Chronicles of Rebecca

Source: The Dear One

Variant: Every day people are straying away from the church and going back to God.

Source: The Thing (1929), Ch. IV : The Drift From Domesticity
Context: In the matter of reforming things, as distinct from deforming them, there is one plain and simple principle; a principle which will probably be called a paradox. There exists in such a case a certain institution or law; let us say, for the sake of simplicity, a fence or gate erected across a road. The more modern type of reformer goes gaily up to it and says, "I don't see the use of this; let us clear it away." To which the more intelligent type of reformer will do well to answer: "If you don't see the use of it, I certainly won't let you clear it away. Go away and think. Then, when you can come back and tell me that you do see the use of it, I may allow you to destroy it."
This paradox rests on the most elementary common sense. The gate or fence did not grow there. It was not set up by somnambulists who built it in their sleep. It is highly improbable that it was put there by escaped lunatics who were for some reason loose in the street. Some person had some reason for thinking it would be a good thing for somebody. And until we know what the reason was, we really cannot judge whether the reason was reasonable. It is extremely probable that we have overlooked some whole aspect of the question, if something set up by human beings like ourselves seems to be entirely meaningless and mysterious. There are reformers who get over this difficulty by assuming that all their fathers were fools; but if that be so, we can only say that folly appears to be a hereditary disease. But the truth is that nobody has any business to destroy a social institution until he has really seen it as an historical institution. If he knows how it arose, and what purposes it was supposed to serve, he may really be able to say that they were bad purposes, or that they have since become bad purposes, or that they are purposes which are no longer served. But if he simply stares at the thing as a senseless monstrosity that has somehow sprung up in his path, it is he and not the traditionalist who is suffering from an illusion.

Variant: You go away for a long time and return a different person - you never come all the way back.
Source: Dark Star Safari: Overland from Cairo to Cape Town

Source: A Hat Full of Sky

Source: Bet Me

CBS Evening News Farewell (1981)
Context: This is my last broadcast as the anchorman of The CBS Evening News; for me, it's a moment for which I long have planned, but which, nevertheless, comes with some sadness. For almost 2 decades, after all, we've been meeting like this in the evenings, and I'll miss that. But those who have made anything of this departure, I'm afraid have made too much. This is but a transition, a passing of the baton. A great broadcaster and gentleman, Doug Edwards, preceded me in this job, and another, Dan Rather, will follow. And anyway, the person who sits here is but the most conspicuous member of a superb team of journalists — writers, reporters, editors, producers—and none of that will change. Furthermore, I'm not even going away! I'll be back from time to time with special news reports and documentaries, and, beginning in June, every week, with our science program, Universe. Old anchormen, you see, don't fade away; they just keep coming back for more. And that's the way it is: Friday, March 6, 1981. I'll be away on assignment, and Dan Rather will be sitting in here for the next few years. Good night.