It is a rare and heartwarming example of a virtuous circle.
Then the worm of doubt entered the system and so the virtuous circle turned vicious.
Economic growth can be seen as a virtuous circle.
An employer's investment in his employees' ability to provide superior service to customers can be seen as a virtuous circle.
It might actually calm the markets a bit and create a virtuous circle.
But the stock market can also work against the economy, quickly turning the virtuous circle into a vicious cycle.
We must recognise the virtuous circle between foreign policy and prosperity.
As a result of that we will be creating a virtuous circle of investment.
We need to create a virtuous circle where the concessions made by the various parties ultimately benefit everyone.
In this way, a virtuous circle would be created.
Likewise, virtuous cycles are possible, with high levels of security leading to development, which further promotes security in return.
The technology sector benefited from a similar virtuous cycle in the 1990's.
It's the market economy's version of a virtuous cycle.
Once the virtuous cycle began, inter-regional trade would increase, reducing American dependence on the outside world.
And this virtuous cycle would create jobs for the people who dream up and run these new Web sites.
The buyers attract still more sellers, and the virtuous cycle continues.
If business does both, it opens up the virtuous cycle of business in development.
Preparation for monetary union has benefited from the virtuous cycle of lower interest rates, which it began itself.
It was thought that this could start a virtuous cycle and a rising business confidence since there would be more workers with money to spend.
There has been a virtuous cycle of cooperation between poor countries to improve millet yields.