change

I said there was but one solitary thing about the past worth remembering and that was the fact that it is past - can't be restored.
Mark Twain - Letter to Mr. Burrough

People pretend that the Bible means the same to them at 50 that it did at all former milestones in their journey. I wonder how they can lie so. It comes of practice, no doubt. They would not say that of Dickens' or Scott's books. Nothing remains the same. When a man goes back to look at the house of his childhood, it has always shrunk: there is no instance of such a house being as big as the picture in memory and imagination call for. Shrunk how? Why, to its correct dimensions: the house hasn't altered; this is the first time it has been in focus.

Well, that's loss. To have house and Bible shrink so, under the disillusioning corrected angle, is loss--for a moment. But there are compensations. You tilt the tube skyward and bring planets and comets and corona flames a hundred and fifty thousand miles high into the field. Which I see you have done, and found Tolstoi. I haven't got him in focus yet, but I've got Browning...
- Letter to W. D. Howells, 8/22/1887

Change is the handmaiden Nature requires to do her miracles with.
- Roughing It