She held firm to her principles.

她坚持自己的原则。

《牛津词典》

Paying for hospital treatment goes against her principles.

拿钱到医院治病有违她的原则。

《牛津词典》

I don't agree with her, but I admire her for sticking to her principles.

我不同意她的意见，但是我赞赏她恪守原则。

《牛津词典》

And so, maybe it's just a matter of each person having his or her own principles and there's nothing more to be said about it, no way of reasoning.

也许这本就是智者见智，仁者见仁的问题,多说无益，也无从论证。

耶鲁公开课 - 公正课程节选

No person running for president can avoid compromising somewhat on his or her principles.

NPR: Before Midterms, a Chat with Sen. Barack Obama

Her principles, to which she was always truthful, were those of a good old-fashioned liberal.

ECONOMIST: Helen Suzman

We need to see that a leader invites dialogue about his or her passion, and acts according to his or her principles and beliefs, as well.

FORBES: Mother Teresa and Henry Ford: The Passionate Leader