Mitt Romney, addressing his Mormon faith on the sidelines of his major speech Saturday at an evangelical university, said he's not running to be "pastor in chief." 

Asked to address "misconceptions" about his faith, Romney said he couldn't' characterize the views of others. But he said despite "significant differences" between religions, "we find common ground and common purpose" in service and values. 

"These causes bring us together and allow us to lock arms despite the different theological views that we have. And ... we care very deeply about finding people who share our values and our views, and work for a person who can become our Commander in Chief but perhaps not our Pastor in Chief." 

The Republican presidential candidate discussed his faith with CBN News while visiting Virginia's Liberty University for his speech Saturday. 

The former Massachusetts governor also discussed his reputation as a prankster. 

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Romney has apologized in recent days for what he described as high school "hijinks" -- after a Washington Post story claimed he had cut a fellow student's hair while attending school decades ago. Romney, though, has said he doesn't recall that specific incident and the family of the alleged victim, who has since died of cancer, has disputed the accuracy of the story. 

In the CBN interview, Romney explained some of his more common pranks -- like "short sheeting" a bed, which is when the sheets in a bed are folded improperly to make it impossible for the person in the bed to stretch out. 

"We have in our family of course, a number of things that we do like pushing people out of a boat, short sheeting their bed, putting corn flakes in their bed, a lot of jokes and tricks that we play among ourselves," Romney said. 

The candidate said he once had a state trooper who short-sheeted his bed once -- but explained how he returned the prank. 

"The next morning when I came down to breakfast, he of course had a big smile because he was going to see how I reacted. I pretended not to notice," Romney said. 

Instead, Romney said, he wrote up an official-looking letter to himself saying the hotel had the maid fired over the improper bed-making. When the "letter" arrived at his office, his secretary showed it to the state trooper. 

"He was so upset. His boss told him he had to call the hotel and explain to the manager that he was the one that had messed up, not the person that they had fired. He got on the phone all red faced, and then finally, of course when the manager had no idea what he was talking about, he realized the joke was on him. 

"So, we play tricks even with the people I work with," Romney said.