To sin by silence, when we should protest,makes cowards out of men.
应该是这样断句,
好像中文没有对应的谚语。
http://answers.yahoo.com/question/index?qid=20071205121916AAVxTxl
People who do nothing when witnessing a crime are just as horrid as those committing it. They are \"sinning\" by their silence in the way they have not spoken against those committing an injustice. Made \"cowards\" by their silence, once confident men can be put to shame by not turning in a criminal. What gives them the right to ignore somebody in pain or another victim in need? This quote is saying the shame that those people must feel by their silence should make them fully experience their cowardice.