Should our moral beliefs ...

Should our moral beliefs really prove to be dependent on factual assumptions shown to be incorrect, it would be hardly moral to defend them by refusing to acknowledge the facts.
Should our moral beliefs really prove to be dependent on factual assumptions shown to be incorrect, it would be hardly moral to defend them by refusing to acknowledge the facts.

More phrases

If one does not know to which port one is sailing, no wind is favorable.
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
We are masters of the unsaid words, but slaves of those we let slip out.
I have always found that mercy bears richer fruits than strict justice.
A lie gets halfway around the world before the truth has a chance to get its pants on.

Quotes from the same author

In no other field has the world yet paid so dearly for the abandonment of nineteenth-century liberalism as in the field where the retreat began: in international relations. Yet only a small part of the lesson which experience ought to have taught us has been learned.
Many who think themselves infinitely superior to the aberrations of Nazism, and sincerely hate all manifestations, work at the same time for ideals whose realization would lead straight to the abhorred tyranny.
Our hopes of avoiding the fate which threatens must...[be to make]adjustments that will be needed if we are to recover and surpass our former standards...and only if every one of us is ready to individually obey the necessities of readjustment shall we be able to get through a difficult period as free men who can choose their own way of life. Let a uniform minimum be secured to everybody by all means; but let us admit at the same time that with this assurance of a basic minimum all claims for a privileged security for particular classes must lapse.
It is tempting to believe that social evils arise from the activities of evil men and that if only good men (like ourselves, naturally) wielded power, all would be well. That view requires only emotion and self-praise - easy to come by and satisfying as well. To understand why it is that 'good' men in positions of power will produce evil, while the ordinary man without power but able to engage in voluntary cooperation with his neighbors will produce good, requires analysis and thought, subordinating emotions to the rational.
There can be little doubt that man owes some of his greatest successes in the past to the fact that he has not been able to control social life. His continued advance may well depend on his deliberately refraining from exercising controls which are now in his power.