Their action in the service of principles is also put to the test.

Does the world need more men of principle, or less?

However, I would like to ask your attention for a question of principle.

What we have here is a very clear view of principle.

One or other of these principles must win out, however.

I just want you to think of the principles involved.

I should like here to state some of the most important principles.

In all these years, you've learned nothing of my principles.

Sometimes it works out, you just need people of principles.

As a matter of principle, she should do it alone.