“… for the human brain can become the best torture house of all those it has invented, established and used in a millions of years, in millions of lands, on millions of howling creatures.”

Rome, or Reason? A Reply to Cardinal Manning. Part I. The North American Review (1888)
Context: "Whosoever will be saved, before all things it is necessary that he hold the Catholic faith." It is not necessary, before all things, that he be good, honest, merciful, charitable and just. Creed is more important than conduct. The most important of all things is, that he hold the Catholic faith. There were thousands of years during which it was not necessary to hold that faith, because that faith did not exist; and yet during that time the virtues were just as important as now, just as important as they ever can be. Millions of the noblest of the human race never heard of this creed. Millions of the bravest and best have heard of it, examined, and rejected it. Millions of the most infamous have believed it, and because of their belief, or notwithstanding their belief, have murdered millions of their fellows. We know that men can be, have been, and are just as wicked with it as without it.

Quoted by K.Mather, Heredity 30, 89–91, 1973.
Since 1960s

The Dinosaur Heresies: A Revolutionary View of Dinosaurs (1986), Longman Scientific & Technical, p. 16
The Dinosaur Heresies (1986)

Source: The Restaurant at the End of the Universe

"Notes on Nationalism" (1945)
Context: By "nationalism" I mean first of all the habit of assuming that human beings can be classified like insects and that whole blocks of millions or tens of millions of people can be confidently labelled "good" or "bad." But secondly — and this is much more important — I mean the habit of identifying oneself with a single nation or other unit, placing it beyond good and evil and recognizing no other duty than that of advancing its interests. Nationalism is not to be confused with patriotism. Both words are normally used in so vague a way that any definition is liable to be challenged, but one must draw a distinction between them, since two different and even opposing ideas are involved. By "patriotism" I mean devotion to a particular place and a particular way of life, which one believes to be the best in the world but has no wish to force on other people. Patriotism is of its nature defensive, both militarily and culturally. Nationalism, on the other hand, is inseparable from the desire for power. The abiding purpose of every nationalist is to secure more power and more prestige, not for himself but for the nation or other unit in which he has chosen to sink his own individuality.

Source: Not a Penny More, Not a Penny Less

Source: How to Get Filthy Rich in Rising Asia

On President Bush's potential veto of a new bill on stem-cell research; reported in Stem cell bill backers hopeful of success http://www.msnbc.msn.com/id/16545499/", NBC News (January 9, 2007).

Source: How to Become President (1940), Ch. 5 : Issues and how to pick them
Context: Today millions of people are living who will never do it again. Millions are being born for the first time–and millions are doing nothing because it’s the best offer they’ve had this week. … It is for these people and many others that the Surprise Party is conceived and desecrated, founded upon the principle that everybody is just as good as anybody else, even though they aren’t quite so smart.