"Then, at the back," said Wemmick, "out of sight, so as not to impede the idea of fortifications,—for it’s a principle with me, if you have an idea, carry it out and keep it up,—I don’t know whether that’s your opinion—"
But that he was not to be, without ignorance or prejudice, mistaken for a gentleman, my father most strongly asseverates; because it is a principle of his that no man who was not a true gentleman at heart ever was, since the world began, a true gentleman in manner.
There are no more uses of "principle" in the book.
Show samples from other sources
I accept as a basic principle that all people are precious and should be treated with equal dignity.
One guiding principle is that everyone should be treated fairly.