“For my own part I am deeply convinced that all excess in the public expenditure beyond the legitimate wants of the country is not only a pecuniary waste—for that is a comparatively trifling matter—but a great political and a great moral evil. It is a characteristic of the mischief which arise from financial prodigality, that they creep onwards with a noiseless and surreptitious step; that they are unseen and unfelt until they have reached a magnitude absolutely overwhelming, and then at length, we see them, as perhaps they now exist in the case of one at least among the great European nations, so fearful and menacing in their aspect that they seem to threaten the very foundations of national existence.”

Letter to Lord Holland (15 November 1795), quoted in L. G. Mitchell, Charles James Fox (London: Penguin, 1997), p. 140.
1790s

Disarm and develop – UN expert urges win-win proposition for States and peoples
2014

Independence Day speech (1828)

Source: Demon Princes (1964-1981), The Palace of Love (1967), Chapter 12 (p. 415)

Autobiography (1873)
Context: it might even be questioned if the various causes of deterioration which had been at work in the meanwhile, had not more than counterbalanced the tendencies to improvement. I had learnt from experience that many false opinions may be exchanged for true ones, without in the least altering the habits of mind of which false opinions are the result. The English public, for example, are quite as raw and undiscerning on subjects of political economy since the nation has been converted to free-trade, as they were before; and are still further from having acquired better habits of thought and feeling, or being in any way better fortified against error, on subjects of a more elevated character. For, though they have thrown off certain errors, the general discipline of their minds, intellectually and morally, is not altered. I am now convinced, that no great improvements in the lot of mankind are possible, until a great change takes place in the fundamental constitution of their modes of thought.

March 24, 1966, page 216.
Official Report of Proceedings of the Hong Kong Legislative Council

Fire as the Cure. p. 81.
Men Against Fire: The Problem of Battle Command (1947)

Nobel Peace prize acceptance speech (1985)
Context: I am convinced that today is a great and exciting day not only for the members of our international movement but also for all physicians on our planet, irrespective of their political and religious beliefs. For the first time in history, their selfless service for the cause of maintaining life on Earth is marked by the high Nobel Prize. True to the Hippocratic Oath, we cannot keep silent knowing what final epidemic-nuclear war — can bring to humankind. The bell of Hiroshima rings in our hearts not as a funeral knell, but as an alarm bell calling out to actions to protect life on our planet.
We were among the first to demolish the nuclear illusions that existed and to unveil the true face of nuclear weapons — the weapons of genocide. We warned the peoples and governments that medicine would be helpless to offer even minimal relief to the hundreds of millions of victims of nuclear war.
However, our contacts with patients inspire our faith in the human reason. Peoples are heedful of the voice of physicians who warn them of the danger and recommend the means of prevention.

Denn zu einem großen Manne gehört beides: Kleinigkeiten als Kleinigkeiten, und wichtige Dinge als wichtige Dinge zu behandeln.
Gotthold Ephraim Lessing, Hamburgische Dramaturgie (1767 - 1769), Vierunddreißigstes Stück Den 25. August 1767 http://www.gutenberg.org/files/10055/10055-8.txt
Misattributed