“We seek to become morally certain — that is, certain for moral purposes — of what is beyond the reach of demonstration. But our moral optimism must include the darkest facts that pessimism can point to, include them and transcend them.”
Section 9 : Ethical Outlook
Founding Address (1876), Life and Destiny (1913)
Context: Theologians often say that faith must come first, and that morality must be deduced from faith. We say that morality must come first, and faith, to those whose nature fits them to entertain it, will come out of the experience of a deepened moral life as its richest, choicest fruit.
Precisely because moral culture is the aim, we cannot be content merely to lift the mass of mankind above the grosser forms of evil. We must try to advance the cause of humanity by developing in ourselves, as well as in others, a higher type of manhood and womanhood than the past has known.
To aid in the evolution of a new conscience, to inject living streams of moral force into the dry veins of materialistic communities is our aim.
We seek to come into touch with the ultimate power in things, the ultimate peace in things, which yet, in any literal sense, we know well that we cannot know. We seek to become morally certain — that is, certain for moral purposes — of what is beyond the reach of demonstration. But our moral optimism must include the darkest facts that pessimism can point to, include them and transcend them.
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Felix Adler 99
German American professor of political and social ethics, r… 1851–1933Related quotes
Ma confession, Lausanne: L'Âge d'Homme, p. 92
Ma confession (1975)

Source: Sustainable History and the Dignity of Man (2009), p.108

1980s and later, Knowledge, Evolution and Society (1983), "Coping with Ignorance", "Our Moral Heritage"

"Science and Scientism", p. 115.
The Second Sin (1973)
'The Continuing Insult to the English Language' (The Monthly, May 2006)
Essays and reviews
Context: ... by now some of the editors and subeditors [on Fleet Street] are themselves products of the anti-educational orthodoxy by which expressiveness counts above precision. It would, if the two terms were separable. But they aren't. Beyond a certain point - and that point is reached early - precision is what expressiveness depends on.

“Beyond a certain point there is no return. This point has to be reached.”
5; variant translations:
From a certain point onward there is no longer any turning back. That is the point that must be reached.
As quoted in The Unfinished Country: A Book of American Symbols (1959) by Max Lerner, p. 452; also in Wait Without Idols (1964) by Gabriel Vahanian, p, 216; in Joyce, Decadence, and Emancipation (1995) by Vivian Heller, 39; in "The Sheltering Sky" (1949) by Paul Bowles, p. 213; and in the poem "Father and Son" by Delmore Schwartz.
There is a point of no return. This point has to be reached.
The Zürau Aphorisms (1917 - 1918)
Variant: From a certain point onward there is no longer any turning back. That is the point that must be reached.
Source: The Trial

Dawkins on Q&A (), replying to a Muslim man who asked about 'absolute morality'. https://www.youtube.com/watch?v=mu7AQTs_y5A

Nietzsche's Zarathustra (1988), p. 40