“If Gladstone fell into the Thames, that would be a misfortune; and if anybody pulled him out, that, I suppose, would be a calamity.”

Live from the West End (1995)

This has also appeared in paraphrased form as: "If there is a God, I don't think He would demand that anyone bow down or stand up to Him. I often have a suspicion that God is still trying to work things out and hasn't finished."
The Paris Review interview (1981)

Was the World Made for Man? (1903): also p. 106, What is man?: and other philosophical writings, Volume 19 of Works, 1993, Mark Twain, Paul Baender, University of California Press

Source: The Bell Jar

Speech http://hansard.millbanksystems.com/commons/1936/nov/12/debate-on-the-address in the House of Commons (12 November 1936).
1936
Context: I put before the whole House my own views with an appalling frankness. From 1933, I and my friends were all very worried about what was happening in Europe. You will remember at that time the Disarmament Conference was sitting in Geneva. You will remember at that time there was probably a stronger pacifist feeling running through this country than at any time since the War. I am speaking of 1933 and 1934... My position as the leader of a great party was not altogether a comfortable one. I asked myself what chance was there... within the next year or two of that feeling being so changed that the country would give a mandate for rearmament? Supposing I had gone to the country and said that Germany was rearming and that we must rearm, does anybody think that this pacific democracy would have rallied to that cry at that moment? I cannot think of anything that would have made the loss of the election from my point of view more certain. I think the country itself learned by certain events that took place during the winter of 1934–35 what the perils might be to it. All I did was to take a moment perhaps less unfortunate than another might have been, and we won the election with a large majority... [In 1935] we got from the country—with a large majority—a mandate for doing a thing that no one, 12 months before, would have believed possible.

The Killing Season, Episode three: The Long Shadow (2010–13)

Louisville, Kentucky http://www.kidbrothers.net/words/concert-transcripts/louisville-kentucky-jun2594.html (June 25, 1994)
In Concert

Lecture, The Anti-Slavery Movement http://books.google.pt/books?id=wN9Dj-_wM0IC&pg=PA33&dq=%22I+would+unite+with+anybody+to+do+right+and+with+nobody+to+do+wrong.%22&redir_esc=y#v=onepage&q=%22I%20would%20unite%20with%20anybody%20to%20do%20right%20and%20with%20nobody%20to%20do%20wrong.%22&f=false (1855)
1850s
Variant: I would unite with anybody to do right; and with nobody to do wrong.

Dame Ethel Smyth, on Merrie England