I love that line... it was from Mr. Smith Goes to Washington. It was a line said by Jeff Smith near the end of the movie, closed with Smith being fainted in the courtroom, defending on that he believes.
Saw it for the first time 2 years ago. Ever since that moment, (the late) James Stewart (absolutely no relation to K-Stew by the way) has been my all time most favorite actor.
If by any chance you're into political movies, I RECOMMEND you to see it. Mentioned the movie in my previous post http://virnamedina.blogspot.com/2009/10/what-is-most-inspiring-or-impressive.html.
Well, how many of us stick to something the way Smith does?
The movie was about a naive and idealistic Jefferson Smith, is appointed on a lark by the spineless governor of his state. He is reunited with the state's senior senator--presidential hopeful and childhood hero, Senator Joseph Paine. In Washington, however, Smith discovers many of the shortcomings of the political process as his earnest goal of a national boys' camp leads to a conflict with the state political boss, Jim Taylor. Taylor first tries to corrupt Smith and then later attempts to destroy Smith through a scandal.
self note:
All you people don't know about lost causes. Mr. Paine does. He said once they were the only causes worth fighting for. And he fought for them once, for the only reason any man ever fights for them; because of just one plain simple rule: 'Love thy neighbor.'... And you know that you fight for the lost causes harder than for any other. Yes, you even die for them.