virtuous
/ˈvər-chə-wəs/
adjective
having or exhibiting virtue
morally excellent : righteous
chaste
a virtuous decision
moral ethical virtuous righteous noble mean conforming to a standard of what is right and good. moral implies conformity to established sanctioned codes or accepted notions of right and wrong. ethical may suggest the involvement of more difficult or subtle questions of rightness, fairness, or equity.
noun
a chain of events in which one desirable occurrence leads to another which further promotes the first occurrence and so on resulting in a continuous process of improvement
But the economy is depressed, in large part, because of the housing bust, which immediately suggests the possibility of a virtuous circle: an improving economy leads to a surge in home purchases, which leads to more construction, which strengthens the economy further, and so on.