On a recent trip to India, British Prime Minister David Cameron justified the Afghan war by saying the troops are keeping Britain safe from terrorism.

VOA: standard.2010.08.04

And if we add consent, then more people are willing to consider the sacrifice morally justified.

如果有征得同意，更多的人就愿意认为,这在道德上是正当的。

耶鲁公开课 - 公正课程节选

What we're justified in believing are those things that we need, not simply when they would offer us some kind of explanation, but when they offer us the best explanation that we can think of.

我们确信我们需要某些东西,不仅在于它们为我们提供了某种解释,还在于它们能使我们,想出的最佳解释

耶鲁公开课 - 死亡课程节选