Especially when they get to be six, seven, eight and start doubting about whether Santa is real.

If one of us starts doubting, somebody else is believing with a smile.

Both of them had been with Nick too long to start doubting him now.

What they've done is made people start doubting themselves.

"We weren't able to put that strong thrust against what they were bringing toward us in order for them to start doubting themselves."

"The timetable is important, otherwise people are going to start doubting he was sincere," she said.

"I've heard enough from you, when you start doubting my word."

If we start doubting ourselves now, we might as well pack it up and just go home.

"It's hard when you don't have that good of a performance and you start doubting yourself."

Maybe now he's going to turn around and start doubting what the Celestines have been telling him.