1.   But Flemings claim that they have been driven to this sort of rigor by the blithe Walloon assumption that Flemings will always be able to speak French.

2.   He says that his age group is reeling, their blithe assumptions buried in the World Trade Center rubble.

3.   I grew up on Long Island, in the blithe assumption that everybody hated it.

4.   The blithe assumption that Social Security funds could be walled off and taxes cut without affecting government spending and creating new deficits was wrong.

5.   The blithe assumption that Social Security funds could be walled off and taxes cut without impacting government spending and creating new deficits was wrong.