Source: What Is This Thing Called Science? (Third Edition; 1999), Chapter 4, Deriving theories from facts: induction, p. 41.
“My father was as well aware as anyone that Christians do not, in general, undergo the demoralizing consequences which seem inherent in such a creed, in the manner or to the extent which might have been expected from it. The same slovenliness of thought, and subjection of the reason to fears, wishes, and affections, which enable them to accept a theory involving a contradiction in terms, prevents them from perceiving the logical consequences of the theory. Such is the facility with which mankind believe at one and the same time things inconsistent with one another, and so few are those who draw from what they receive as truths, any consequences but those recommended to them by their feelings, that multitudes have held the undoubting belief in an Omnipotent Author of Hell, and have nevertheless identified that being with the best conception they were able to form of perfect goodness.”
Source: Autobiography (1873)
https://archive.org/details/autobiography01mill/page/41/mode/1up pp. 41–42
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John Stuart Mill 179
British philosopher and political economist 1806–1873Related quotes

Source: 1850s, An Investigation of the Laws of Thought (1854), p. 49: as cited in: " Professor Boole's Mathematical theory http://books.google.com/books?id=tBNLAAAAYAAJ&pg=PA62" in: Henry Longueville Manse, Philosophical pamphlets, (1853), p. 6

Introduction à l'Étude de la Médecine Expérimentale (1865)

Announcing the Bombing of Hiroshima (1945)
Context: We are now prepared to obliterate more rapidly and completely every productive enterprise the Japanese have above ground in any city. We shall destroy their docks, their factories, and their communications. Let there be no mistake; we shall completely destroy Japan's power to make war.
It was to spare the Japanese people from utter destruction that the ultimatum of July 26 was issued at Potsdam. Their leaders promptly rejected that ultimatum. If they do not now accept our terms they may expect a rain of ruin from the air, the like of which has never been seen on this earth.

cannot be answered, because we have no experience or authentic information from which to answer it; and that any answer only throws the difficulty a step further back, since the question immediately presents itself, “Who made God?”
Source: Autobiography (1873), Ch. 2: Moral Influences in Early Youth. My Father's Character and Opinions.