“Ah, on the water, I presume.”

Source: The Red Pyramid

Source: Henry IV, Part 2

Henry Morton Stanley, spoken on October 27, 1871, in Ujiji near Lake Tanganyika in present-day Tanzania. (Elsewhere said to have occurred on November 10, 1871)
There were no other white men known to be in the vicinity. As the two had not been formally introduced, it was a proper way to address Livingstone without committing a breach of etiquette.
Quotes:

King v. Brett (1806), 5 Esp. 261.

Evening Standard, September 20, 1939.
"Rendezvous", a cartoon set in the ruins of Poland showing Stalin and Hitler genially bowing to each other.

Margaret Thatcher, at a Tory party conference, holding a brush. (date unknown)
Leader of the Opposition

My Reviewers Reviewed (lecture from June 27, 1877, San Francisco, CA)
Context: The next gentleman who has endeavored to answer what I have said, is the Rev. Samuel Robinson. This he has done in his sermon entitled “Ghosts against God or Ingersoll against Honesty.” I presume he imagines himself to be the defendant in both cases.

Source: Eldest

Source: Anarchy, State, and Utopia (1974), Ch. 10 : A Framework for Utopia; Utopian Means and Ends, p. 330
Context: One persistent strand in utopian thinking, as we have often mentioned, is the feeling that there is some set of principles obvious enough to be accepted by all men of good will, precise enough to give unambiguous guidance in particular situations, clear enough so that all will realize its dictates, and complete enough to cover all problems which actually arise. Since I do not assume that there are such principles, I do not presume that the political realm will whither away. The messiness of the details of a political apparatus and the details of how it is to be controlled and limited do not fit easily into one's hopes for a sleek, simple utopian scheme.