Obviously, if a party changes its central principles, it becomes another party.

"They are simply trying to solve short-term problems, and from a long-term perspective, they are not going to significantly change their fundamental hard-line principles."

He never changed his principles, and he fought to the end.

He went on: "We're not letting people who offer us money change our principles."

"Surely Colonel Burr has not changed so rapidly his Republican principles."

I deny an "attachment to monarchy," and I deny that I have "changed my principles since 1776."

Hey this is the NEW politics, you can change your principles every day as long as you are being "pragmatic" and "progressive".

John McCain says about the abortion issue, "I believe we are an inclusive party and we can be so without changing our principles."

But the former Hamas foreign minister, Mahmoud Zahar, said that Hamas would not change its principles.

"And I decided it was better to change parties than to change my principles."