To sign back; to return by a formal act; to yield to another; to surrender; -- said especially of office or emolument. Hence, to give up; to yield; to submit; -- said of the wishes or will, or of something valued; -- also often used reflexively.
If I had to resign every time the Cabinet disagrees with me, I could not last as a Defense Minister one week. Moshe Dayan
If you belonged to a political party or a social club that was tied to as much bigotry, misogyny, homophobia, violence, and sheer ignorance as religion is, you'd resign in protest. Bill Maher
I did not resign from politics because of Bofors. I resigned because I do not know how to play petty politics. I did not know back then and I don't know now either. Amitabh Bachchan
Learn to... be what you are, and learn to resign with a good grace all that you are not. Henri Frederic Amiel
Ladies and gentlemen, it is with great sadness that I announce that I will resign as Australia's Minister for Foreign Affairs. I am sad because I love this job. I'm totally dedicated to the work that we are doing in Australia's name around the world, and I believe that we have achieved many good results for Australia, and I'm proud of them. Kevin Rudd