Still, if you will not fight for the right when you can easily win without bloodshed;
If you will not fight when your victory will be sure and not too costly;
You may come to the moment when you will have to fight with all the odds against you and only a precarious chance of survival.
There may even be a worse case. You may have to fight when there is no hope of victory, because it is better to perish than live as slaves.