"moral capacity" is correct and usable in written English.
You can use it to refer to an individual's capacity for moral judgement or behavior. For example, "The teacher modeled good behavior, which helped to build his students' moral capacity."
There's a thoughtful, moral capacity to his work that was formed during his upbringing and studies in Germany.
At the same time, to focus on the moral capacity or culpability of American leaders can obscure the ruthless gambits of ruling classes in less powerful countries.
The short answer is that we should recognize that the criteria for responsibility — intentionality and moral capacity — are social and legal concepts, not scientific, medical or psychiatric ones.
Arias Dávila, however, has been described both as being too old and as lacking the intellectual and moral capacity needed by a captain general.
We were reminded, once again, that part of the "soft power" that accompanies the Presidency, for good or ill, is the appearance of wholesomeness, of moral capacity, of love.
Most disturbing was his recognition that because natural selection gave a contingent, materialist explanation for the existence of the moral capacity, it removed any divine or cosmic endorsement of its products.
Some argue that humans should enhance their moral capacities by adopting institutions that facilitate morally good motives and behaviour.
A further question that arises is whether babies possess more subtle moral capacities than preferring good and avoiding bad.
This experiment was designed to explore babies' expectations about social interactions, not their moral capacities per se.
The war has so dulled our moral capacities as to make some of our soldiers capable of mass murder and some of our civilians capable of applauding or willfully ignoring that murder.
He succeeded in writing simply while never sacrificing emotional sophistication or his natural respect for every child's moral capacities; one of the things that make his stories fascinating is their idiosyncratic attack on ancient philosophical questions, as Michael Patrick Hearn, author of "The Annotated Wizard of Oz" (1983), has pointed out.
