The lamps are going out all over Europe: we shall not see them lit again in our life-time."
Edward Grey, Vol. 2, ch. 18, "lamps+are+going" p. 20 books.google
On his famous remark, in August of 1914, about the impending outbreak of the First World War
Cf. John Alfred Spender: Life, Journalism and Politics, Vol. 2, Frederick A. Stokes Company, New York 1927. Chp. 20, p. 14 archive.org and w:The lamps are going out.