"It's not like we have a formula, but I think one of the reasons this show has survived is that it has a big heart at its center. Other cartoon shows have people crap on each other and make racist jokes. But I don't think people tune in for that. I just don't think a show lasts for 10 years without a heart"

Trey Parker's quote speaks to the importance of having a heart at the center of a program in order to guarantee its durability. He suggests that other cartoon programs may count on jokes that are offensive or unsuitable, however that this is not what people tune in for. Instead, it is the heart of the show that keeps people returning for more. Parker suggests that without a heart, a program will not last for 10 years. This is a testimony to the power of emotion and connection in storytelling. It is clear that Parker believes that a show should have a heart in order to achieve success and to last for a very long time. He is suggesting that a show should have a strong emotional core in order to be successful and to keep audiences engaged.