If you know something is morally reprehensible, then it is your moral obligation to stop it as soon as possible.

There is a moral obligation that those who have should give to those who don't.

It is our moral obligation to give every child the very best education possible.

Those who have prospered and profited from life's lottery have a moral obligation to share their good fortune.

We not only have a legal obligation to honor our commitments, we have a moral obligation to provide the coverage we promised to provide to these people.

I think we have a moral obligation to our children that can be easily summarized: number one, protect them from harm.