George has always been a peaceful, law-abiding man, and he has raised his kids to be the same way. He donates to charitable causes and provides a comfortable life for his family. One night he takes his kids to a carnival and in the parking lot, they are confronted by an armed robber. The robber has a knife and threatens to harm one of George's kids if he does not hand over his wallet. As stated in the scenario, George donates to charity but still provides a comfortable life for his family. He has found a balance between the competing virtues of giving to the less-fortunate while also ensuring that he provides for his family. This is an illustration of:_______.