From Shane Claiborne, writer and activist:
If we lose a generation in the church, that loss won't be because we failed to entertain them, but because we failed to dare them — to take the words of Jesus seriously and to do something about the things that are wrong in the world. (Thanks to Chris E. for sending the quote along.)
From Psalm 60:2, The Book of Common Prayer
You have shaken the earth and split it open;
repair the cracks in it, for it totters.