If someone has died, then it is because I have failed in my duty.

To do less would be to fail in my duty.

I'd failed in my moral duty to at least try to see things from their point of view.

You men have failed in your duty to the crane.

The government "failed in their duty of care", he says.

For ten centuries my race has not failed in its duty.

If they fail in their duties, the Commission must act.

Isn't the education authority failing in its duty though, when it has to send children home?

We would be failing in our duty towards the citizens, especially the workers.

And now how many might perish if he failed in his duty?