If people cannot sense a reward, she says,then they might have difficulty completing an activity.

VOA: special.2009.09.16

"We simply cannot continue to spend as if deficits do not have consequences, as if waste does not matter."

VOA: standard.2010.02.01

"We have difficult times. We cannot afford everything we wish for if we want to create the future."

VOA: standard.2010.06.16